Exhaust/Supply Fan, Assembled Unassembled, Blade Diameter 48 in, Blade Material Aluminum, Frame Material Steel, For Maximum Motor Horsepower 5 hp, For Maximum Motor Speed 1,007 RPM, For Minimum Motor Horsepower 3/4 hp, For Minimum Motor Speed 539 RPM, Maximum Airflow 35,694 cfm, Maximum Static Pressure 0.75 in wg, Minimum Airflow 19,105 cfm, For -Out Height 50 1/2 in, For -Out Width 50 1/2 in, For -Out Diameter 50 1/2 in, Guard Type None, Method of Construction Cast, Number of Blades 6