60 in Backdraft Damper / Wall Shutter, 60-1/2 in x 60-1/2 in DESCRIPTION_UPDATE mongo_id: 65bbe96a22d7a989a99547b1

mongo_id: 65bbe96a22d7a989a99547b1

mongo_id: 65bbe84c22d7a989a98e97e2

Material Grade C87850 graingerSKU: 49YT62

mongo_id: 65bbe8479a749db822783778

60 in Backdraft Damper / Wall Shutter, 60-1/2 in x 60-1/2 in DESCRIPTION_UPDATE mongo_id: 65bbe96a22d7a989a99547b163 In. H W 6 1 4 In. L Extrd Alu Backdraft Dampr, Damper Application Backdraft, For Nominal Duct Diameter Not Applicable, Frame Material Aluminum, Number of Panels 2, Maximum Air Velocity 3000 fpm, Overall Height 63 in, Rough Opening Diameter 60 1 2 in, Rough Opening Shape Square, Fits Fan Diameter 60 in, For Duct Shape Not Applicable, Free Area 20. 4 sq ft, Overall Width 63 in, Frame Material Thickness 0. 8 in, Overall Length 6 1 4 in, Connection