... fan blade 2. air conditioning fans 590mm heatpump water heater fan impeller,axial fan blade impeller Product photos: SpecificationsApplication: ... , Φ52… and so on.Centrifugal Blower Wheel:Φ48, Φ66, Φ135, Φ240, Φ235, Φ230, Φ300, Φ308, Φ317, Φ320, Φ325, Φ350, Φ352, Φ380 ...