Blower with Motor and Drive Package, Wheel Type Forward-Curved, Drive Type Belt Drive, Includes Drive Package Yes, Assembly Unassembled, Wheel Diameter 12 3/4 in, Airflow @ 0.000 in SP Not Applicable, Airflow @ 0.100 in SP Not Applicable, Airflow @ 0.125 in SP 2, 520 cfm, Airflow @ 0.250 in SP 2, 100 cfm, Airflow @ 0.375 in SP Not Applicable, Airflow @ 0.400 in SP Not Applicable, Airflow @ 0.500 in SP Not Applicable, Airflow @ 0.750 in SP Not Applicable, Airflow @ 1.000 in SP Not Applicable