{"title":"3000 Series - Opposed Blade Air Control Dampers","description":"\u003cdiv class=\"panel-heading\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cb\u003eStandard Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"panel-collapse collapse in\" id=\"collapseOne\"\u003eOpposed blade operation for precise volume control\u003cbr\u003e16 gauge galvanized channel frame\u003cbr\u003eGalvanized blades are vee stiffened for extra strength and stability\u003cbr\u003eBlades pivot on high-temperature nylon bushings\u003cbr\u003e1\/2\" square zinc plated steel pivot pins\u003cbr\u003e1\/2\" square zinc plated steel adjustable operating shaft, extending up to 4\" beyond the air control frame\u003cbr\u003eBlades run parallel to the first dimension given\u003cbr\u003eBlades must be operated on a horizontal plane\u003cbr\u003eMinimum size 8\"x8\"\u003cbr\u003eMaximum one piece size 48\"x48\"\u003cbr\u003eGalvanized Finish\u003c\/div\u003e\n\u003cdiv class=\"panel-collapse collapse in\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"panel-collapse collapse in\"\u003e\n\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eOptions\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003eLow Leak Package: features stainless steel jamb seals, blade to blade neoprene seals, and 3% maximum leakage with a pressure differential 3\" W.C. (3000OBDLL)\u003cbr\u003eAir control damper with aluminum airfoil blades. The airfoil blade design provides excellent pressure drop performance over standard blade design.\u003cbr\u003e12 gauge galvaneal construction\u003cbr\u003eExtended square operating shaft (extending 7-1\/2\" beyond the air control frame)\u003cbr\u003eRound operating shaft (1\/2\" diameter)\u003cbr\u003eSpring opening damper\u003cbr\u003eSpring closing damper\u003cbr\u003eOil impregnated bronze bearings\u003cbr\u003eOutside mounting flange\u003cbr\u003eDirect mount damper motors (Field installed.) Mounts on operating shaft. Standard operating shaft position is bottom right, the back side of damper blades when viewed from the face of the product. \u003ca href=\"http:\/\/www.shoemakermfg.com\/Portals\/0\/Images\/Product%20Guide\/3000OBD-OpShaft.png\"\u003eView Image\u003c\/a\u003e\u003cbr\u003eFractional and exact O.D. dimensions\u003cbr\u003e\n\u003cdiv class=\"blk\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"panel-collapse collapse in\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"panel-collapse collapse in\"\u003eSUBMITTALS\n\u003cdiv class=\"blk\"\u003e\u003ca class=\"blk2\" href=\"http:\/\/www.shoemakermfg.com\/Portals\/0\/Media\/Submittals\/3000OBD-SUB.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e3000OBD Series Submittal\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"blk\"\u003e\u003ca class=\"blk2\" href=\"http:\/\/www.shoemakermfg.com\/Portals\/0\/Media\/Submittals\/Damper-Sleeves.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSleeve Submittal\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"blk\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"blk\"\u003eOTHER DOCUMENTS\n\u003cdiv class=\"blk\"\u003e\u003ca class=\"blk2\" href=\"http:\/\/www.shoemakermfg.com\/Portals\/0\/Literature\/Options\/MotorSizing-3000Series.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eMotor Sizing and Selection\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"opposed-blade-volume-damper-3000-0bd-10x10","title":"Opposed Blade Volume Damper 3000-0BD-10X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433275609157,"sku":"209331","price":265.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a.jpg?v=1537524693"},{"product_id":"opposed-blade-volume-damper-3000-0bd-12x10","title":"Opposed Blade Volume Damper 3000-0BD-12X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433295925317,"sku":"209332","price":265.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_dc87ee28-a93a-4167-bd48-28a4a995008f.jpg?v=1537524703"},{"product_id":"opposed-blade-volume-damper-3000-0bd-12x12","title":"Opposed Blade Volume Damper 3000-0BD-12X12","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433299398725,"sku":"209333","price":265.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_ae4cf323-d115-43b2-954a-cc189bda6713.jpg?v=1537524714"},{"product_id":"opposed-blade-volume-damper-3000-0bd-12x14","title":"Opposed Blade Volume Damper 3000-0BD-12X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433309458501,"sku":"209334","price":265.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_f6d2051d-06fd-483b-9e7d-29a92bb31926.jpg?v=1537524724"},{"product_id":"opposed-blade-volume-damper-3000-0bd-14x10","title":"Opposed Blade Volume Damper 3000-0BD-14X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433333805125,"sku":"209335","price":265.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_6f820064-2a8a-4d8d-9ae4-3b9e986a8d39.jpg?v=1537524735"},{"product_id":"opposed-blade-volume-damper-3000-0bd-14x14","title":"Opposed Blade Volume Damper 3000-0BD-14X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433340817477,"sku":"209336","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_713eeaab-01b7-40c0-a53b-e1eb894fc8f5.jpg?v=1537524745"},{"product_id":"opposed-blade-volume-damper-3000-0bd-14x16","title":"Opposed Blade Volume Damper 3000-0BD-14X16","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433354711109,"sku":"209337","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_193e43e4-f5fc-44d8-8133-241568ca7963.jpg?v=1537524756"},{"product_id":"opposed-blade-volume-damper-3000-0bd-14x18","title":"Opposed Blade Volume Damper 3000-0BD-14X18","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433367130181,"sku":"209338","price":343.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_d001cafc-178c-4d29-8b0d-b64c595dbf6d.jpg?v=1537524766"},{"product_id":"opposed-blade-volume-damper-3000-0bd-14x20","title":"Opposed Blade Volume Damper 3000-0BD-14X20","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433379942469,"sku":"209339","price":378.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_6f34fcad-09d9-458c-8f96-96ecda0e99c7.jpg?v=1537524776"},{"product_id":"opposed-blade-volume-damper-3000-0bd-15x15","title":"Opposed Blade Volume Damper 3000-0BD-15X15","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433390821445,"sku":"209340","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_d32d2726-c623-4f9f-9f2f-1429021f1039.jpg?v=1537524787"},{"product_id":"opposed-blade-volume-damper-3000-0bd-16x10","title":"Opposed Blade Volume Damper 3000-0BD-16X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433413201989,"sku":"209341","price":265.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_f9d8499d-cb66-4ec0-9f09-d0d6229115f8.jpg?v=1537524801"},{"product_id":"opposed-blade-volume-damper-3000-0bd-16x14","title":"Opposed Blade Volume Damper 3000-0BD-16X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433422311493,"sku":"209342","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_82fcff90-e101-4989-9e4f-6302d8228daa.jpg?v=1537524811"},{"product_id":"opposed-blade-volume-damper-3000-0bd-16x16","title":"Opposed Blade Volume Damper 3000-0BD-16X16","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433434828869,"sku":"209343","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_04eb2945-656e-4bb7-9375-b4121f6ff1d8.jpg?v=1537524821"},{"product_id":"opposed-blade-volume-damper-3000-0bd-18x14","title":"Opposed Blade Volume Damper 3000-0BD-18X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433447215173,"sku":"209344","price":343.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_6f1701ac-288a-46a5-8ba6-1e3f9a48910f.jpg?v=1537524832"},{"product_id":"opposed-blade-volume-damper-3000-0bd-18x18","title":"Opposed Blade Volume Damper 3000-0BD-18X18","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433457307717,"sku":"209345","price":427.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_5325d66e-4d8d-4138-b553-7dcba1ca188a.jpg?v=1537524842"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x10","title":"Opposed Blade Volume Damper 3000-0BD-20X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433471725637,"sku":"209346","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_0271a381-5f96-4131-9e03-78575fb26d8f.jpg?v=1537524852"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x12","title":"Opposed Blade Volume Damper 3000-0BD-20X12","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433486766149,"sku":"209347","price":343.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_5faf91a9-0d1d-4f4d-a99f-8a74c8813e8e.jpg?v=1537524863"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x14","title":"Opposed Blade Volume Damper 3000-0BD-20X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433497284677,"sku":"209348","price":378.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_1398ec60-1574-4ebd-9338-7a6934cdc054.jpg?v=1537524873"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x16","title":"Opposed Blade Volume Damper 3000-0BD-20X16","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433514094661,"sku":"209349","price":416.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_db36c950-c3e9-44ef-9431-c5a65d30127d.jpg?v=1537524883"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x18","title":"Opposed Blade Volume Damper 3000-0BD-20X18","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433528447045,"sku":"209350","price":481.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_5b809f5c-7da0-4474-bc2d-9a8ca98ccda2.jpg?v=1537524894"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x20","title":"Opposed Blade Volume Damper 3000-0BD-20X20","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433538736197,"sku":"209351","price":524.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_3cfa28f1-cd5f-4c61-99bb-7a86b8ae7f5c.jpg?v=1537524904"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x22","title":"Opposed Blade Volume Damper 3000-0BD-20X22","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433553219653,"sku":"209352","price":547.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_a0c5aca8-ab10-45c8-ace1-f59ec87f7589.jpg?v=1537524915"},{"product_id":"opposed-blade-volume-damper-3000-0bd-20x24","title":"Opposed Blade Volume Damper 3000-0BD-20X24","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433562198085,"sku":"209353","price":656.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_c29ca514-8b26-4927-b616-f58628c5ecc0.jpg?v=1537524925"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x10","title":"Opposed Blade Volume Damper 3000-0BD-22X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433571274821,"sku":"209354","price":343.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_d9d849d6-7736-4209-a671-d784b1f759f3.jpg?v=1537524935"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x12","title":"Opposed Blade Volume Damper 3000-0BD-22X12","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433582841925,"sku":"209355","price":378.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_2f9f2958-9c79-4ad5-9074-15d3f9effafa.jpg?v=1537524945"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x14","title":"Opposed Blade Volume Damper 3000-0BD-22X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433602895941,"sku":"209356","price":416.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_32d074fa-806f-46ec-a009-893219825c23.jpg?v=1537524956"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x16","title":"Opposed Blade Volume Damper 3000-0BD-22X16","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433616068677,"sku":"209357","price":460.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_03fd0aef-c8a0-4767-9295-61a0cd340b10.jpg?v=1537524967"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x18","title":"Opposed Blade Volume Damper 3000-0BD-22X18","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433624064069,"sku":"209358","price":504.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_fdad031a-d26f-4047-bd2c-40771327239e.jpg?v=1537524977"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x20","title":"Opposed Blade Volume Damper 3000-0BD-22X20","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433640316997,"sku":"209359","price":547.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_81f1aaa7-581e-41ac-8861-40b9cf4166fb.jpg?v=1537524987"},{"product_id":"opposed-blade-volume-damper-3000-0bd-22x22","title":"Opposed Blade Volume Damper 3000-0BD-22X22","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433656995909,"sku":"209360","price":569.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_868512f9-9365-463c-93ef-a300d83d40ec.jpg?v=1537524998"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x10","title":"Opposed Blade Volume Damper 3000-0BD-24X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433671413829,"sku":"209361","price":403.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_82d099a4-3d58-4ead-ab88-19fee9318dcb.jpg?v=1537525008"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x12","title":"Opposed Blade Volume Damper 3000-0BD-24X12","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433681801285,"sku":"209362","price":460.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_26c16352-658f-4dc1-9160-5d5d562d5295.jpg?v=1537525019"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x14","title":"Opposed Blade Volume Damper 3000-0BD-24X14","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433698250821,"sku":"209363","price":504.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_40c22008-9147-4c94-ab56-f397c5bbbd32.jpg?v=1537525029"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x16","title":"Opposed Blade Volume Damper 3000-0BD-24X16","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433707262021,"sku":"209364","price":547.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_b1d8d0bd-7425-4512-a2b8-bd588a88dabd.jpg?v=1537525039"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x18","title":"Opposed Blade Volume Damper 3000-0BD-24X18","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433720238149,"sku":"209365","price":610.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_18195795-f1e7-435c-8676-0296d4e8300f.jpg?v=1537525051"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x20","title":"Opposed Blade Volume Damper 3000-0BD-24X20","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433735573573,"sku":"209366","price":656.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_5db7bea0-1e7e-4ad5-a4c8-cf4bd3cf3cdf.jpg?v=1537525061"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x22","title":"Opposed Blade Volume Damper 3000-0BD-24X22","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433746485317,"sku":"209367","price":720.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_fcc599f2-354d-4c25-9b67-632afc094e5d.jpg?v=1537525071"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x24","title":"Opposed Blade Volume Damper 3000-0BD-24X24","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433768865861,"sku":"209368","price":787.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_dbe84d29-52c1-4ee8-8fe1-c72e8dbef098.jpg?v=1537525082"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x26","title":"Opposed Blade Volume Damper 3000-0BD-24X26","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433772798021,"sku":"209369","price":873.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_28a55380-2c94-46e2-aa97-29d6f111ab18.jpg?v=1537525093"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x28","title":"Opposed Blade Volume Damper 3000-0BD-24X28","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433782988869,"sku":"209370","price":915.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_72a3f508-5164-4e10-ae72-951ef35dba77.jpg?v=1537525103"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x30","title":"Opposed Blade Volume Damper 3000-0BD-24X30","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433803993157,"sku":"209371","price":983.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_3442e8d1-781c-44f0-9ca6-b09970d7eea4.jpg?v=1537525114"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x32","title":"Opposed Blade Volume Damper 3000-0BD-24X32","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433816412229,"sku":"209372","price":1070.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_804fd248-a206-43d0-b9b2-78ec5fa364d2.jpg?v=1537525124"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x34","title":"Opposed Blade Volume Damper 3000-0BD-24X34","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433835089989,"sku":"209373","price":1198.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_d4f3d177-6d78-4d6f-a608-5e30226b3a17.jpg?v=1537525135"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x36","title":"Opposed Blade Volume Damper 3000-0BD-24X36","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433846493253,"sku":"209374","price":1198.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_87fc5c15-801f-4a5f-9298-6fa44c0fed3c.jpg?v=1537525145"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x38","title":"Opposed Blade Volume Damper 3000-0BD-24X38","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433860354117,"sku":"209375","price":1374.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_c70515bf-dd42-47e7-8fc2-ac3427ed42f6.jpg?v=1537525155"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x40","title":"Opposed Blade Volume Damper 3000-0BD-24X40","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433874280517,"sku":"209376","price":1374.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_abba74bb-99d2-4ba2-a6c3-cc1fca1c05de.jpg?v=1537525166"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x48","title":"Opposed Blade Volume Damper 3000-0BD-24X48","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433882275909,"sku":"209377","price":1701.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_3382208a-c6e7-4d92-8f20-d05ce1e9a90d.jpg?v=1537525176"},{"product_id":"opposed-blade-volume-damper-3000-0bd-24x6","title":"Opposed Blade Volume Damper 3000-0BD-24X6","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433900167237,"sku":"209378","price":299.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_7067bc9b-b26d-4391-9635-ad7273e0b4c6.jpg?v=1537525187"},{"product_id":"opposed-blade-volume-damper-3000-0bd-26x10","title":"Opposed Blade Volume Damper 3000-0BD-26X10","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433907343429,"sku":"209379","price":460.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_7e8e9c54-a93b-43cd-a8b3-612b52a2f806.jpg?v=1537525197"},{"product_id":"opposed-blade-volume-damper-3000-0bd-26x12","title":"Opposed Blade Volume Damper 3000-0BD-26X12","description":"h3.Standard Features * Opposed blade operation for precise volume control * 16 gauge galvanized channel frame * Blades are vee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non-metallic celcon bushings * 1\/2\" square zinc plated steel pivot pins * 1\/2\" square zinc plated steel adjustable operating shaft extending up to 4\" beyond the air control frame * Single blades on dampers with a height of 12\" or less * Mill finish h3.Options * 3000 OBDLL - Low Leak Air Control Damper. Jamb seals (stainless steel), blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3\" W.C. * 3100 Series - Face and By-Pass dampers * Sleeve variations * 12 gauge galvaneal construction * Flat head and sill frame construction * Extended square operating shaft (extending 7-1\/2\" beyond the air control frame) * Round operating shaft (1\/2\" diameter) * Oil impregnated bronze bushings * Spring closed or spring open dampers * Outside mounting flange * Direct mount damper motors * Fractional and odd sizes available","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":14433923072069,"sku":"209380","price":504.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/products\/e92f16310c51be60f424916e0de3ca7a_e01fcf6d-9077-49e6-ad00-e31ef74d0181.jpg?v=1537525208"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0028\/7509\/7157\/collections\/3000OBD.jpg?v=1542034277","url":"https:\/\/www.registers-direct.com\/collections\/3100-series-face-and-bypass-air-control-dampers.oembed?page=28","provider":"Registers-Direct","version":"1.0","type":"link"}