Blower Wheel Type Forward-Curved Includes Drive Package Yes Assembly Unassembled Wheel Diameter 10 1/4 in Airflow @ 0.125 in SP 1 575 cfm Airflow @ 0.250 in SP 1 455 cfm Airflow @ 0.375 in SP 1 250 cfm Maximum Static Pressure 1/4 in wc Maximum Inlet Air Temperature 140 Degrees F Shaft Diameter 3/4 in Bearing Type Ball Sound Level 6.2 sones @ 0.250 in SP and 5 ft 6.7 sones @ 0.125 in SP and 5 ft Wheel Material Steel Housing Material Steel Number of Inlets 2