DAYTON 53DR16 12 in Backdraft Damper / Wall Shutter, 14-1/2 in x 14-1/2 in
$67.95
17 In.H-W 5.75 In.L Aluminum Wall Fan Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 17 in, Rough Opening Diameter 14 1/2...