Blower, Wheel Type Forward-Curved, Drive Type Belt Drive, Includes Drive Package Yes, Assembly Unassembled, Wheel Diameter 11 1/8 in, Airflow @ 0.000 in SP Not Applicable, Airflow @ 0.100 in SP Not Applicable, Airflow @ 0.125 in SP 1, 820 cfm, Airflow @ 0.250 in SP 1, 720 cfm, Airflow @ 0.500 in SP 1, 500 cfm, Airflow @ 0.750 in SP 1, 250 cfm, Airflow @ 1.000 in SP 930 cfm, Airflow @ 1.250 in SP Not Applicable, Airflow @ 1.500 in SP Not Applicable, Airflow @ 2.000 in SP Not Applicable