32.75 In.H-W Alu Universal Backdraft Dampr, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 32 3/4 in, Rough Opening Shape Square, Fits Fan Diameter 30 in, Free Area 4.8 sq ft, Overall Width 32 3/4 in,...
32.75 In.H-W Alu Universal Backdraft Dampr, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 32 3/4 in, Rough Opening Shape Square, Fits Fan Diameter 30 in, Free Area 4.8 sq ft, Overall Width 32 3/4 in,...