60 In.H 60 In.W Drnbl Extrd Alu Intake Louver Louver Type Stationary Blade Frame Type Hat Channel Frame Depth 4 in Mounting Style Recess Mount Outside Height 59 1/2 in Outside Width 59 1/2 in Rough Opening Height 60 in Rough Opening Width 60 in Louver Maximum Intake 8 187 cfm Maximum Exhaust 10 688 cfm Maximum Outside Width 59 1/2 in Minimum Outside Width 59 1/2 in Flange Width Not Applicable Free Area 13.3 sq ft Beginning Point of Water Penetration 1 031 fpm