DAYTON 2FTX7 36 in Agricultural Wall Exhaust Shutter, 39-1/2 in x 39-1/2 in
$252.99
42 In.H-W 5.75 In.L Alu Wall Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 42 in, Rough Opening Diameter 39...