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Your cart is empty.Backdraft Damper / Wall Shutter, Fits Fan Dia. 48 in, Shutter Overall Size 54 in x 54 in, Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 51-1/2 in x 51-1/2 in, Shutter Free Area 14.841 sq ft, Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Length 54 in, Width 54 in, Frame Depth 2 1/2 in, Open Depth 5 3/4 in, Flange Width 1 1/2 in, Mounting Hole Size 9/64 in, Max. Velocity 2500 FPM
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