In-Line Duct Blower Wheel Type Backward-Inclined Drive Type Belt Drive Includes Drive Package Yes Assembly Unassembled Wheel Diameter 18 in Airflow @ 0.125 in SP 3 638 cfm Airflow @ 0.250 in SP 3 573 cfm Airflow @ 0.375 in SP 3 497 cfm Airflow @ 0.500 in SP 3 416 cfm Airflow @ 0.750 in SP 3 234 cfm Airflow @ 1.000 in SP 3 018 cfm Airflow @ 1.250 in SP 2 765 cfm Airflow @ 1.500 in SP 2 438 cfm For High-Static Pressure Applications Yes Maximum Inlet Air Temperature 160 Degrees F