Backdraft Damper / Gable Shutter, Fits Fan Dia. 16 in, Shutter Overall Size 19 in x 19 in, Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 17 in x 17 in, Shutter Free Area 1.402 sq ft, Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Length 19 in, Frame Depth 1 7/16 in, Open Depth 5 1/4 in, Flange Width 1 1/2 in, Mounting Hole Size Prepunched, Max. Velocity 1500 FPM, Blade Material Mill Finish Aluminum
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