In-Line Duct Blower Wheel Type Backward-Inclined Drive Type Direct Drive Includes Drive Package Yes Assembly Assembled Wheel Diameter 11 in Airflow @ 0.000 in SP 451 cfm Airflow @ 0.125 in SP 394 cfm Airflow @ 0.250 in SP 342 cfm Airflow @ 0.375 in SP 280 cfm Airflow @ 0.500 in SP 201 cfm Maximum Static Pressure 1/2 in wc For High-Static Pressure Applications No Maximum Inlet Air Temperature 104 Degrees F Shaft Diameter 1/2 in