Blower Wheel Type Forward-Curved Includes Drive Package Yes Assembly Unassembled Wheel Diameter 8 in Airflow @ 0.125 in SP 1 185 cfm Airflow @ 0.250 in SP 1 115 cfm Airflow @ 0.375 in SP 1 040 cfm Airflow @ 0.500 in SP 965 cfm Airflow @ 0.750 in SP 550 cfm Maximum Static Pressure 3/4 in wc Maximum Inlet Air Temperature 140 Degrees F Shaft Diameter 3/4 in Bearing Type Ball Sound Level 14.8 sones @ 0.250 in SP and 5 ft 15.1 sones @ 0.125 in SP and 5 ft Wheel Material Steel