26.75 In.H-W 4.5 In.L Alu Intake Shutter Dampr, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2250 fpm, Overall Height 26 3/4 in, Rough Opening Diameter 25 in, Rough Opening Shape Square, Fits Fan Diameter 24 in, For Duct Shape Not Applicable, Free Area 3.2 sq ft, Overall Width 26 3/4 in, Frame Material Thickness 0.1 in, Overall Length 4 1/2 in, Connection Type Not Applicable, Frame Depth 1 5/8 in, Rough Opening Length 25 in

Aluminum-frame, aluminum-louver shutters are designed for use with vertical-mounted supply fans. Galvanized reinforcement and felted edges assure easy opening and quiet sealing. Stainless steel hardware with spring-assist closure. Open depth: 6". Do not use with vaneaxial or tubeaxial fans.WARNING: Do not use with vaneaxial or tubeaxial fans.<br /><br /> Item: Backdraft Damper / Intake Shutter<br /> Fits Fan Dia.: 24"<br /> Shutter Overall Size: 26-3/4" x 26-3/4"<br /> Shutter Construction Material: Extruded Aluminum Frame and G-90 Galvanized Tie Rods<br /> Shutter Opening Required: 25" x 25"<br /> Shutter Free Area: 3.221 sq. ft.<br /> Shutter Mounting Position: Vertical<br /> Shutter Mounting Location: Wall<br /> Shutter Item: Backdraft Damper / Intake Shutter<br /> Frame Depth: 1-19/32"<br /> Open Depth: 6"<br /> Flange Width: 1-1/2"<br /> Mounting Hole Size: Prepunched<br /> Max. Velocity: 2250 FPM<br /> Blade Material: Mill Finish Aluminum<br /> For Use With: Vertical Mounted Supply Fans<br /> Number of Panels: 1<br />