Direct Dive Utility Blower Wheel Type Backward-Inclined Drive Type Direct Drive Includes Drive Package Yes Assembly Assembled Wheel Diameter 12 in Airflow @ 0.000 in SP 2 100 cfm Airflow @ 0.125 in SP 2 050 cfm Airflow @ 0.250 in SP 1 800 cfm Airflow @ 0.500 in SP 1 868 cfm Airflow @ 0.750 in SP 1 719 cfm Airflow @ 1.000 in SP 1 565 cfm Airflow @ 1.250 in SP 1 225 cfm Airflow @ 1.500 in SP 1 088 cfm Airflow @ 2.000 in SP Not Applicable Airflow @ 2.500 in SP Not Applicable