20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in DESCRIPTION_UPDATE Sign Legend Style Text graingerSKU:

Sign Legend Style Text graingerSKU: 466R45

zoro_no: G5214651

Features Left Handed graingerSKU: 52TF67

10X33MM Shnk

20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in DESCRIPTION_UPDATE Sign Legend Style Text graingerSKU:25 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