Blower, Wheel Type Backward-Inclined, Drive Type Belt Drive, Includes Drive Package Yes, Assembly Unassembled, Wheel Diameter 12 1/4 in, Airflow @ 0.250 in SP 2,619 cfm, Airflow @ 0.500 in SP 2,536 cfm, Airflow @ 0.750 in SP 2,453 cfm, Airflow @ 1.000...