DAYTON 4YN17 24 in Backdraft Damper / Intake Shutter, 25 in x 25 in
$160.99
26.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 26 3/4 in, Rough Opening Diameter 25 in, Rough Opening Shape Square,...