12.5 inch blower wheel, plastic fan wheel impeller, centrifugal blower wheel 1. single inlet fan wheel 2. air purifier ... inch blower wheel, plastic fan wheel impeller, centrifugal blower wheel ,plastic blower wheel 317x135,centrifugal fan wheel,air cleaner fan impeller Outer ... time. 12.5 inch blower wheel, plastic fan wheel impeller, centrifugal blower wheel