Blower Wheel Type Forward-Curved Includes Drive Package Yes Assembly Unassembled Wheel Diameter 8 in Airflow @ 0.125 in SP 1 020 cfm Airflow @ 0.250 in SP 935 cfm Airflow @ 0.375 in SP 860 cfm Airflow @ 0.500 in SP 720 cfm Maximum Static Pressure 1/2 in wc Maximum Inlet Air Temperature 140 Degrees F Shaft Diameter 3/4 in Bearing Type Ball Sound Level 12.5 sones @ 0.250 in SP and 5 ft 12.8 sones @ 0.125 in SP and 5 ft Wheel Material Steel Housing Material Steel Number of Inlets 2