Louver Wall Opening 36x36In Galvannealed

36 In.H 36 In.W Non-Drnbl GSteel Modulr Louver Louver Type Stationary Blade Frame Type Hat Channel Frame Depth 4 in Mounting Style Flush Mount Outside Height 35 1/2 in Outside Width 35 1/2 in Rough Opening Height 36 in Rough Opening Width 36 in Louver Maximum Intake 3 063 cfm Maximum Exhaust 4 376 cfm Maximum Outside Width 35 1/2 in Minimum Outside Width 35 1/2 in Flange Width Not Applicable Free Area 4 sq ft Beginning Point of Water Penetration 709 fpm