Series : W Material : Wood Stile Size : 0.75 In. x 3.5 In. Tread Size : 0.75 In. x 3.5 In. Load Capacity (Lb.) : 250 Minimum Ceiling Height : 7 Ft. 11 In. Maximum Ceiling Height : 10 Ft. 4 In. Rough Opening Length (In.) : 54 Rough Opening Width (In.) : 22.5
Size : 12 In. x 4 Ft. Thickness : 0.88 In. Type : Unfiltered Shingle-Over Ridge Vent Color : Black Net Free Area : 18 Sq. In. per Linear Ft. Roof Pitch Size : 3/12 to 16/12