DAYTON 3C310 36 in Backdraft Damper / Wall Shutter, 36-1/2 in x 36-1/2 in
$170.99
39 In.H-W 5.75 In.L Alu Wall 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 39 in, Rough Opening Diameter 36 1/2 in,...