Centrifugal Upblast Roof Exhaust Fan Application Industrial and Commercial Buildings Restaurants Schools Drive Type Belt Drive For Air Type Kitchen Air Base Diameter 22 1/8 in Base Width Not Applicable Base Length Not Applicable Base Shape Round Maximum Static Pressure 1 1/2 in wc Exhaust Airflow @ 0.000 in SP 3 996 cfm Nameplate Voltage 115/208-230V AC Phase 1 Motor Horsepower 1 hp Assembly Unassembled Number of Speeds 1 Housing Material Aluminum Wheel Material Aluminum