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This fiberglass backdraft damper is designed for applications where a nominal duct diameter is not applicable, such as in fan installations. It features a fiberglass frame with a maximum air velocity of 2500 fpm and a free area of 2.3 sq ft. The damper's compact size and square rough opening shape make it suitable for use in tight spaces, while its durable fiberglass construction ensures long-lasting performance. Ideal for use in residential and commercial settings, this backdraft damper helps to prevent backdrafts and maintain a safe indoor air quality. It is available for immediate shipment in quantities of one unit.
23 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 23 in, Rough Opening Diameter 20 1/2 in, Rough Opening Shape Square, Fits Fan Diameter 20 in, For Duct Shape Not Applicable, Free Area 2.3 sq ft, Overall Width 23 in, Frame Material Thickness 0.1 in, Overall Length 6 1/2 in, Connection Type Not Applicable, Frame Depth 3 in