Exhaust Fan with Drive Package, Assembled Unassembled, Blade Diameter 60 in, Blade Material Aluminum, Drive Type Belt Drive, Exhaust Airflow @ 0.000 in SP 60, 918 cfm, For Cut-Out Height 62 1/2 in, For Cut-Out Width 62 1/2 in, Frame Finish Zinc Plated, Frame Material Steel, Guard Type None, Includes Drive Package, Includes Dehumidistat No, Maximum Airflow 60, 918 cfm, Maximum Noise Level 54 sones