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