Axial Upblast Roof Exhaust Fan, Assembly Unassembled, Drive Type Belt Drive, Blade Diameter 60 in, Base Diameter Not Applicable, Base Length 72 1/2 in, Base Width 72 1/2 in, Base Shape Square, Maximum Airflow 64, 326 cfm, Minimum Airflow 36, 740 cfm, Maximum Motor Horsepower 10 hp, Minimum Motor Horsepower 3 hp, Maximum Motor Speed 504 RPM, Minimum Motor Speed 277 RPM, Maximum Static Pressure 3/8 in wc, For High-Static Pressure Applications No, For Air Type Clean Air. This item has been restricted from sale in the following state (s): []