Blower Wheel Type Forward-Curved Includes Drive Package Yes Assembly Unassembled Wheel Diameter 8 in Airflow @ 0.125 in SP 700 cfm Airflow @ 0.250 in SP 575 cfm Maximum Inlet Air Temperature 140 Degrees F Shaft Diameter 3/4 in Bearing Type Ball Sound Level 5.1 sones @ 0.250 in SP and 5 ft 6 sones @ 0.125 in SP and 5 ft Wheel Material Steel Housing Material Steel Number of Inlets 2 Nameplate Voltage 115/230V AC Phase 1