DAYTON 53DR13 20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in
$98.19
25 In.H-W 5.75 In.L Aluminum Wall Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 25 in, Rough Opening Diameter 22 1/2 in, Rough...