Backdraft Damper / Wall Shutter, Fits Fan Dia. 24 In., Shutter Overall Size 27 In. x 27 In., Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 24-1/2 In. x 24-1/2 In., Shutter Free Area 3.320 sq. ft., Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Frame Depth 2-1/2 In., Open Depth 5-3/4 In., Flange Width 1-1/2 In., Mounting Hole Size Prepunched, Max. Velocity 2500 FPM, Blade Material White Painted Aluminum Specification: Item: Backdraft Damper / Wall Shutter Mounting Hole Size: Prepunched For Use With: Vertical Mounted Exhaust Fans Shutter Item: Backdraft Damper / Wall Shutter Shutter Opening Required: 24-1/2" x 24-1/2" Frame Opening A: 24" Shutter Construction Material: Extruded Aluminum Frame and G-90 Galvanized Tie Rods Shutter Free Area: 3.320 sq. ft. Blade Material: White Painted Aluminum Open Depth: 5-3/4" Shutter Mounting Position: Vertical Shutter Mounting Location: Wall Frame Depth: 2-1/2" Frame Opening B: 24" Number of Panels: 1 Flange Width: 1-1/2" Shutter Overall Size: 27" x 27" Fits Fan Dia.: 24" Max. Velocity: 2500 FPM

Backdraft Damper / Wall Shutter, Fits Fan Dia. 24 In., Shutter Overall Size 27 In. x 27 In., Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 24-1/2 In. x 24-1/2 In., Shutter Free Area 3.320 sq. ft., Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Frame Depth 2-1/2 In., Open Depth 5-3/4 In., Flange Width 1-1/2 In., Mounting Hole Size Prepunched, Max. Velocity 2500 FPM, Blade Material White Painted Aluminum Specification: Item: Backdraft Damper / Wall Shutter Mounting Hole Size: Prep