50.75 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 50 3/4 in, Rough Opening Diameter 49 in, Rough Opening Shape Square, Fits Fan Diameter 48 in, For Duct Shape Not Applicable, Free Area 12.3 sq ft, Overall Width 50 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 49 in

<p>Backdraft Damper / Intake Shutter, Fits Fan Dia. 48 In., Shutter Overall Size 50-3/4 In. x 50-3/4 In. , Shutter Construction Material Extruded Aluminum Frame and G-90 Galvanized Tie Rods, Shutter Opening Required 49 In. x 49 In., Shutter Free Area 12.323 sq. ft., Vertical Shutter Mounting Position, Shutter Mounting Location Wall, Frame Depth 1-19/32 In., Open Depth 6 In., Flange Width 1-1/2 In., Mounting Hole Size Prepunched, Max. Velocity 2250 FPM, Blade Material Mill Finish Aluminum</p><p><b>Specification: </b><ul><li>Item: Backdraft Damper / Intake Shutter</li><li>Mounting Hole Size: Prepunched</li><li>For Use With: Vertical Mounted Supply Fans</li><li>Shutter Item: Backdraft Damper / Intake Shutter</li><li>Shutter Opening Required: 49" x 49"</li><li>Frame Opening A: 48"</li><li>Shutter Construction Material: Extruded Aluminum Frame and G-90 Galvanized Tie Rods</li><li>Shutter Free Area: 12.323 sq. ft.</li><li>Blade Material: Mill Finish Aluminum</li><li>Open Depth: 6"</li><li>Shutter Mounting Position: Vertical</li><li>Shutter Mounting Location: Wall</li><li>Frame Depth: 1-19/32"</li><li>Frame Opening B: 48"</li><li>Number of Panels: 1</li><li>Flange Width: 1-1/2"</li><li>Shutter Overall Size: 23"</li><li>Fits Fan Dia.: 48"</li><li>Max. Velocity: 2250 FPM</li></ul></p>

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.: 48"<br /> Shutter Overall Size: 50-3/4" x 50-3/4"<br /> Shutter Construction Material: Extruded Aluminum Frame and G-90 Galvanized Tie Rods<br /> Shutter Opening Required: 49" x 49"<br /> Shutter Free Area: 12.323 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 />