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20 in 23 H-W 5.75 L Aluminum Backdraft Damper 20-1/2 in x 20-1/2 in Aluminum 4C559
23 In.H-W 5.75 In.L Aluminum Backdraft Damper Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Aluminum Number of Panels 1 Maximum Air Velocity 2500 fpm Overall Height 23 in Rough Opening Diameter 20 1/2 in Rough...
$106.71 Free Delivery
