Intake Louver Fixed Drainable 42H x 30W

45 In.H 33 In.W Drnbl Extrd Alu Intake Louver Louver Type Stationary Blade Frame Type Flanged Frame Depth 4 in Mounting Style Surface Mount Outside Height 41 1/2 in Outside Width 29 1/2 in Rough Opening Height 42 in Rough Opening Width 30 in Louver Maximum Intake 4 652 cfm Maximum Exhaust 6 652 cfm Maximum Outside Width 32 1/2 in Minimum Outside Width 32 1/2 in Flange Width 1 1/2 in Free Area 4.6 sq ft Beginning Point of Water Penetration 1 031 fpm Maximum Air Velocity 3500 fpm