High Pressure Blower Wheel Type Radial Drive Type Belt Drive Includes Drive Package Yes Assembly Unassembled Wheel Diameter 12 1/2 in Airflow @ 1.000 in SP 978 cfm Airflow @ 2.000 in SP 933 cfm Airflow @ 3.000 in SP 887 cfm Airflow @ 4.000 in SP 844 cfm Airflow @ 5.000 in SP 792 cfm Airflow @ 6.000 in SP 738 cfm Airflow @ 7.000 in SP 677 cfm Airflow @ 8.000 in SP 639 cfm Airflow @ 9.000 in SP 595 cfm Airflow @ 10.00 in SP 572 cfm Airflow @ 11.00 in SP 467 cfm