OEM Blower, Wheel Type Forward-Curved, Drive Type Direct Drive, Includes Drive Package Not Applicable, Assembly Assembled, Wheel Diameter 5 1/4 in, Airflow @ 0.000 in SP 134 cfm, Airflow @ 0.100 in SP 126 cfm, Airflow @ 0.125 in SP Not Applicable, Airflow @ 0.250 in SP 116 cfm, Airflow @ 0.375 in SP Not Applicable, Airflow @ 0.400 in SP 96 cfm, Airflow @ 0.500 in SP 79 cfm, Airflow @ 0.750 in SP Not Applicable, Airflow @ 1.000 in SP Not Applicable, Airflow @ 1.250 in SP Not Applicable