DAYTON 4FZK1 36 in Backdraft Damper / Wall Shutter, 36-1/2 in x 36-1/2 in
$545.99
39 In.H-W 5 1/4 In.L SS Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Stainless Steel, Number of Panels 2, Maximum Air Velocity 2500 fpm, Overall Height 39 in, Rough Opening Diameter 36 1/2 in,...