Centrifugal Upblast Roof Exhaust Fan Application Kitchens Drive Type Belt Drive For Air Type Kitchen Air Base Diameter Not Applicable Base Width 29 1/8 in Base Length 29 1/8 in Base Shape Square Maximum Static Pressure 7/8 in wc Exhaust Airflow @ 0.000 in SP 3 551 cfm Nameplate Voltage 115/230V AC Phase 1 Motor Horsepower 1/2 hp Assembly Unassembled Number of Speeds 1 Housing Material Steel Wheel Material Steel High-Efficiency Motor No For High-Static Pressure Applications No