1Pack Dayton 53DR20 20 in Backdraft Damper / Wall Shutter 22-1/2 in x 22-1/2 in

1Pack Dayton 53DR20 20 in Backdraft Damper / Wall Shutter 22-1/2 in x 22-1/2 in

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Description
25 In.H-W 6 In.L Aluminum Backdraft Damper Damper Application Backdraft For Nominal Duct Diameter Not Applicable Frame Material Galvanized Steel Number of Panels 1 Maximum Air Velocity 2000 fpm Overall Height 25 in Rough Opening Diameter 22 1/2 in...
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