DAYTON 53DR12 12 in 17"H-W 5.75"L Aluminum Wall Shutter, 14-1/2 in x 14-1/2 in,
17 In.H-W 5.75 In.L Aluminum Wall 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 in,...