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20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in DESCRIPTION_UPDATE zoro_no: G9754851

Description

zoro_no: G9754851

10X33MM Shnk

mongo_id: 65bbe72f3aaddbd5a907dc0e

zoro_no: G5214651

20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in DESCRIPTION_UPDATE zoro_no: G975485125 In. H W 6 In. L Aluminum Backdraft Damper, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Galvanized Steel, Number of Panels 1, Maximum Air Velocity 2000 fpm, Overall Height 25 in, Rough Opening Diameter 22 1 2 in, Rough Opening Shape Square, Fits Fan Diameter 20 in, For Duct Shape Not Applicable, Free Area 2. 5 sq ft, Overall Width 25 in, Frame Material Thickness 20 ga, Overall Length 6 in, Connection Type

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