4" Comb Mixing Damper 4500-24X18

h3.Standard Features * Extruded Aluminum blade and frame * 4500-3000P - 4" louver depth * 4550-3000P - 2" louver depth * Sleeve attached to 4500 or 4550 for easy mounting * Standard flange frame FF * Driftwood Tan finish (outside air louver) h3.Options * 4500-3000 PLL Low Leak Air Control Damper. Jamb seals (stainless steel), Blade to blade neoprene seals, 3% maximum leakage with a pressure differential 3" W.C. * 4500-3000 P CF - Flush mount channel frame * 4500-3000 P OF - Offset flange frame, must specify placement * 4525-3000 P - 4" drainable louver * Direct Mount Damper Motors, see "Size and Performance Table" below * Fractional and odd sizes available * Standard Color, Designer Color or Mill Finish available on this product