DAYTON 4YN18 36 in Backdraft Damper / Intake Shutter, 37 in x 37 in
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$234.99
product description
38.75 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 38 3/4 in, Rough Opening Diameter 37 in, Rough Opening Shape Square,...Read More