27 In.H-W 5.75 In.L Alu Wall Exhaust Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 fpm, Overall Height 27 in, Rough Opening Diameter 24 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 24 in, For Duct Shape Not Applicable, Free Area 3.3 sq ft, Overall Width 27 in, Frame Material Thickness 0.8 in, Overall Length 5 3/4 in, Connection Type Not Applicable, Frame Depth 3 in This shutter is for cabinet fans and flush-mount wall exhaust applications. The frame has G-90 galvanized steel tie rods and stainless steel rivets and pivot pins. The mill-finish aluminum louvers with a galvanized steel reinforcement strip open easily and minimize load on the fan.
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