In-Line Duct Blower, Wheel Type Backward-Inclined, Drive Type Belt Drive, Includes Drive Package Yes, Assembly Unassembled, Wheel Diameter 11 in, Airflow @ 0.000 in SP 952 cfm, Airflow @ 0.125 in SP 924 cfm, Airflow @ 0.250 in SP 897 cfm, Airflow @ 0.375 in SP 870 cfm, Airflow @ 0.500 in SP 842 cfm, Airflow @ 0.750 in SP 784 cfm, Airflow @ 1.000 in SP 716 cfm, Airflow @ 1.250 in SP 643 cfm, Airflow @ 1.500 in SP 563 cfm, Maximum Static Pressure 1 1/2 in wc