39 In.H-W 6.5 In.L Fiberglass Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Fiberglass, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 39 in, Rough Opening Diameter 36 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 36 in, For Duct Shape Not Applicable, Free Area 7.4 sq ft, Overall Width 39 in, Frame Material Thickness 0.1 in, Overall Length 6 1/2 in, Connection Type Not Applicable, Frame Depth 3 in

This model is a rear flanged exhaust shutter for areas where corrosion is a known problem. The frame and blades are a heavy duty fiberglass pultrusion. The shutter is ideal for use with direct-drive or belt-driven exhaust fans in chemical plants and poultry/swine confinement operations.<br /><br /> Item: Backdraft Damper / Wall Shutter<br /> Fits Fan Dia.: 36"<br />Shutter Overall Size: 39" x 39"<br /> Shutter Construction Material: Fiberglass Frame and Stainless Steel Tie Rod<br /> Shutter Opening Required: 36-1/2" x 36-1/2"<br /> Shutter Free Area: 7.436 sq. ft.<br /> Shutter Mounting Position: Vertical<br /> Shutter Mounting Location: Wall<br /> Shutter Item: Backdraft Damper / Wall Shutter<br /> Frame Depth: 3"<br /> Open Depth: 6-1/4"<br /> Flange Width: 1-1/2"<br /> Mounting Hole Size: Prepunched<br /> Max. Velocity: 2500 FPM<br /> Blade Material: Beige Fiberglass<br /> For Use With: Vertical Mounted Exhaust Fans<br /> Number of Panels: 1<br />