Blower Wheel Type Forward-Curved Includes Drive Package Yes Assembly Unassembled Wheel Diameter 11 1/2 in Airflow @ 0.125 in SP 1 885 cfm Airflow @ 0.250 in SP 1 715 cfm Airflow @ 0.375 in SP 1 350 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 7.5 sones @ 0.250 in SP and 5 ft 8.4 sones @ 0.125 in SP and 5 ft Wheel Material Steel Housing Material Steel Number of Inlets 2