Blower Wheel Type Forward-Curved Drive Type Direct Drive Includes Drive Package Yes Assembly Unassembled Wheel Diameter 9 in Airflow @ 1.500 in SP 1 390 cfm Airflow @ 2.000 in SP 1 050 cfm Airflow @ 2.500 in SP Not Applicable Airflow @ 3.000 in SP Not Applicable Airflow @ 3.500 in SP Not Applicable Airflow @ 4.000 in SP Not Applicable Airflow @ 4.500 in SP Not Applicable Airflow @ 5.000 in SP Not Applicable Airflow @ 6.000 in SP Not Applicable Airflow @ 7.000 in SP Not Applicable