Centrifugal Downblast Roof Exhaust Fan Drive Type Belt Drive Assembly Unassembled Wheel Diameter 14 3/4 in Base Diameter Not Applicable Base Length 22 in Base Width 22 in Base Shape Square Nameplate Voltage 115/230V AC Phase 1 Motor Horsepower 1 hp Exhaust Airflow @ 0.000 in SP 3 163 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 1 3/4 in wc