DAYTON 1C055 30 in Backdraft Damper / Wall Shutter, 30-1/2 in x 30-1/2 in
$112.99
33 In.H-W 5 3/4 In.L Alu Wall Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 33 in, Rough Opening Diameter 30...