Centrifugal Downblast Roof Exhaust Fan Drive Type Direct Drive Assembly Assembled Wheel Diameter 13 3/4 in Base Diameter Not Applicable Base Length 19 in Base Width 19 in Base Shape Square Nameplate Voltage 208-230V AC Phase 1 Motor Horsepower 3/4 hp Exhaust Airflow @ 0.000 in SP 1 618 cfm For High-Static Pressure Applications No High-Efficiency Motor Yes For Air Type Clean Air Includes Drive Package Yes Includes Motor Yes Mounting Location Roof