Louver Damper, Adjustable, 18H x 54W DESCRIPTION_UPDATE zoro_no: G7333462

zoro_no: G7333462

zoro_no: G5191702

Sign Legend No Smoking No Flames No Sparks

Oil Resistant graingerSKU: 459D12

Louver Damper, Adjustable, 18H x 54W DESCRIPTION_UPDATE zoro_no: G733346220. 5 In. H 56. 5 In. W Drnbl Extrd Alu Combo Dmpr, Louver Type Combination, Frame Type Flanged, Outside Height 17 1 2 in, Outside Width 53 1 2 in, Rough Opening Height 18 in, Rough Opening Width 54 in, Louver Maximum Intake 2,648 cfm, Maximum Exhaust 3,787 cfm, Flange Width 1 1 2 in, Free Area 2. 4 sq ft, Beginning Point of Water Penetration 1,118 fpm, Maximum Air Velocity 3,000 fpm, Blade Angle 45 Degrees , Material Aluminum, Inside Height 16 1 2