Blower Wheel Type Forward-Curved Includes Drive Package Yes Assembly Unassembled Wheel Diameter 15 1/2 in Airflow @ 0.375 in SP 4 880 cfm Airflow @ 0.500 in SP 4 625 cfm Airflow @ 0.750 in SP 1 660 cfm Maximum Static Pressure 3/4 in wc Maximum Inlet Air Temperature 140 Degrees F Shaft Diameter 1 in Bearing Type Ball Wheel Material Steel Housing Material Steel Number of Inlets 2 Nameplate Voltage 230/460V AC Phase 3