Centrifugal Downblast Roof Exhaust Fan, Drive Type Direct Drive, Assembly Assembled, Wheel Diameter 8 in, Base Diameter Not Applicable, Base Length 19 in, Base Width 19 in, Base Shape Square, Nameplate Voltage 115V AC, Phase 1, Motor Horsepower 1/15 hp, Exhaust Airflow @ 0.000 in SP 768 cfm, For High-Static Pressure Applications No, High-Efficiency Motor No, For Air Type Clean Air, Includes Drive Package Yes, Includes Motor Yes, Mounting Location Roof, Maximum Static Pressure 5/8 in wc