DAYTON 4YN20 16 in Backdraft Damper / Gable Shutter, 17 in x 17 in
$80.69
19 In.H-W 6 In.L Aluminum Gable Shutter Damper, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 19 in, Rough Opening Diameter 16 1/2 in, Rough Opening Shape Square,...