Axial Downblast Roof Exhaust Fan Mounting Location Roof Assembly Unassembled Blade Diameter 54 in Housing Material Steel Exhaust Airflow @ 0.000 in SP 27 612 cfm For High-Static Pressure Applications No High-Efficiency Motor No Maximum Static Pressure 3/8 in wc Motor Enclosure Open Dripproof Motor Horsepower 5 hp Nameplate Voltage 208/230/460V AC Number of Speeds 1 Phase 3 Maximum Inlet Air Temperature 104 Degrees F Number of Blades 5 Supply Airflow @ 0.000 in SP 27 612 cfm