Dayton 3C309 30-Inch Wall Shutter Backdraft Damper for Exhaust Fans - Perfect for Kitchen, Bathroom & Commercial Ventilation Systems

Dayton 3C309This model is a rear flanged exhaust shutter for areas where corrosion may be a problem. The frame is mill finish aluminum. The blades have a white enamel finish and a galvanized reinforcement strip across the top of each blade for added strength and counter balancing efficiency. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Ideal for use with direct-drive or belt-driven exhaust fans.Backdraft Damper / Wall ShutterFits Fan Dia. 30 inShutter Overall Size 33 in x 33 inShutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie RodsShutter Opening Required 30-1/2 in x 30-1/2 inShutter Free Area 5.452 sq ftVertical Shutter Mounting PositionShutter Mounting Location WallFrame Depth 3 inOpen Depth 6 1/4 inFlange Width 1 1/2 inMounting Hole Size PrepunchedMax. Velocity 2500 FPMBlade Material White Painted Aluminum

This model is a rear flanged exhaust shutter for areas where corrosion may be a problem

The frame is mill finish aluminum

The blades have a white enamel finish and a galvanized reinforcement strip across the top of each blade for added strength and counter balancing efficiency

The blades have a felt seal on the leading edge for quiet closing and better protection from the weather

Ideal for use with direct-drive or belt-driven exhaust fans