20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in DESCRIPTION_UPDATE Standards ASME Section VIII /

Standards ASME Section VIII / CRN graingerSKU: 30VY48

Fits Brand Dayton graingerSKU: 22FV32

zoro_no: G5825823

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20 in Backdraft Damper / Wall Shutter, 22-1/2 in x 22-1/2 in DESCRIPTION_UPDATE Standards ASME Section VIII /25 In. H W 5. 75 In. L Aluminum Wall Shutter, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 1, Maximum Air Velocity 2500 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 0. 8 in, Overall Length 5 3 4 in, Connection Type Not