In-Line Duct Blower Wheel Type Backward-Inclined Drive Type Direct Drive Includes Drive Package Yes Assembly Assembled Wheel Diameter 13 1/8 in Airflow @ 0.000 in SP 1 948 cfm Airflow @ 0.125 in SP 1 883 cfm Airflow @ 0.250 in SP 1 818 cfm Airflow @ 0.375 in SP 1 754 cfm Airflow @ 0.500 in SP 1 692 cfm Airflow @ 0.750 in SP 1 562 cfm Airflow @ 1.000 in SP 1 416 cfm Airflow @ 1.250 in SP 1 239 cfm Maximum Static Pressure 1 1/4 in wc For High-Static Pressure Applications No