Centrifugal Downblast Roof Exhaust Fan Drive Type Belt Drive Assembly Unassembled Wheel Diameter 13 1/4 in Base Diameter Not Applicable Base Length 22 in Base Width 22 in Base Shape Square Nameplate Voltage 115/208-230V AC Phase 1 Motor Horsepower 1/3 hp Exhaust Airflow @ 0.000 in SP 1 880 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