Centrifugal Upblast Roof Exhaust Fan Application Industrial and Commercial Buildings Restaurants Schools Drive Type Direct Drive For Air Type Kitchen Air Base Diameter Not Applicable Base Width 30 in Base Length 30 in Base Shape Square Maximum Static Pressure 1 1/4 in wc Exhaust Airflow @ 0.000 in SP 4 307 cfm Nameplate Voltage 115/230V AC Phase 1 Motor Horsepower 1 hp Assembly Assembled Number of Speeds 1 Housing Material Aluminum Wheel Material Aluminum