Exhaust Fan, Assembled Unassembled, Blade Diameter 30 in, Blade Material Steel, Frame Material Steel, For Maximum Motor Horsepower 1 hp, For Maximum Motor Speed 968 RPM, For Minimum Motor Horsepower 1/4 hp, For Minimum Motor Speed 621 RPM, Maximum Airflow 11,061 cfm, Maximum Static Pressure 0.75 in wg, Minimum Airflow 7,096 cfm, For -Out Height 32 1/2 in, For -Out Width 32 1/2 in, For -Out Diameter 32 1/2 in, Guard Type None, Method of Construction Stamped, Number of Blades 6