2" Comb Stat Damper 4550-24X20

h3.Standard Features * Extruded aluminum blade * 4" deep frame standard * 4500-3510 with pressure relief damper * 4500-3550 with backdraft damper * Aluminum construction 3510 pressure relief damper * Galvanized construction 3550 backdraft damper * Sleeve attached to 4500 or 4550 for easy mounting * For exhaust and intake applications * Driftwood Tan (outside air louver) h3.Options * CF - channel frame * 4550-3510 - 2" deep frame with pressure relief damper * 4550-3550 - 2" deep frame with backdraft damper * 4525-3510 - 4" drainable louver with pressure relief damper * 4525-3550 - 4" drainable louver with backdraft damper * Fractional and odd sizes available * Standard Color, Designer Color or Mill Finish available on this product