50.5 In. H 44.5 In. W Drnbl Extrd Alu Combo Dmpr, Louver Type Combination, Frame Type Flanged, Outside Height 47 1/2 in, Outside Width 41 1/2 in, Rough Opening Height 48 in, Rough Opening Width 42 in, Louver Maximum Intake 6, 945 cfm, Maximum Exhaust 9, 932 cfm, Flange Width 1 1/2 in, Free Area 6.2 sq ft, Beginning Point of Water Penetration 1, 118 fpm, Maximum Air Velocity 3, 000 fpm, Blade Angle 45 Degrees, Material Aluminum, Inside Height 46 1/2 in, Inside Width 39 3/4 in, Number of Blades 10.

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