OEM Blower, Wheel Type Forward-Curved, Drive Type Direct Drive, Includes Drive Package Yes, Assembly Assembled, Wheel Diameter 4 1/2 in, Airflow @ 0.000 in SP 250 cfm, Airflow @ 0.100 in SP 245 cfm, Airflow @ 0.400 in SP 238 cfm, Airflow @ 0.500 in SP...