Dayton 18" Backdraft Damper/Wall Shutter 18-1/2" x 18-1/2" Opening Required

Item Name:Dayton 18" Backdraft Damper/Wall Shutter 18-1/2" x 18-1/2" Opening RequiredDescription:The shutters open automatically when the fan is activated. The 26-ga. mill-finish aluminum louvers are felted on the leading edge for quiet operation. Additional features include nylon bushings and stainless steel pivot pins.Note: Do not use with vaneaxial or tubeaxial fans. Item: Backdraft Damper / Wall Shutter Fits Fan Dia.: 18" Shutter Overall Size: 21" x 21" Shutter Construction Material: G-90 Galvanized Steel Frame and Tie Rods Shutter Opening Required: 18-1/2" x 18-1/2" Shutter Free Area: 2.051 sq. ft. Shutter Mounting Position: Vertical Shutter Mounting Location: Wall Shutter Item: Backdraft Damper / Wall Shutter Frame Depth: 2-1/4" Open Depth: 6-1/4" Flange Width: 1-1/2" Mounting Hole Size: Prepunched Max. Velocity: 2000 FPM Blade Material: Mill Finish Aluminum For Use With: Vertical Mounted Exhaust Fans Number of Panels: 1Item: Backdraft Damper / Wall Shutter | Fits Fan Dia.: 18" |