Hog Slat Inc. Newton Grove, NC USA December 2022 6 Wind Storm Fans Installation Framing The rough in opening for the fan is an exact measurement that accounts for the heads of fasteners and openings for fan. Ensure there is proper clearance for installation or rough opening may require larger measurements. Fan Model Rough Opening (Width x Height) 36” Galvanized Slant Wall 40 3/4 ” X 42 3/4” (103.5 cm x 108.6 cm) ! In some applications the slope on the fan housing requires exterior finish material to extend 3/4" below the top of the rough opening!
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