Axial Downblast Roof Exhaust Fan Mounting Location Roof Assembly Assembled Blade Diameter 18 in Housing Material Aluminum Exhaust Airflow @ 0.000 in SP 2 982 cfm For High-Static Pressure Applications No High-Efficiency Motor No Maximum Static Pressure 3/4 in wc Motor Enclosure Open Air Over Motor Horsepower 1/3 hp Nameplate Voltage 115V AC Number of Speeds 1 Phase 1 Maximum Inlet Air Temperature 120 Degrees F Number of Blades 4 Supply Airflow @ 0.000 in SP 2 982 cfm