556x167 fan blade for 5HP heat pump water heater,22' fan 1. Propeller fan ... impeller 3. Plastic fan 556x167 fan blade for 5HP heat pump water heater,22' fan Outer Diameter: 556mmHeight: ... characteristics, it is air conditioner, air energy heatpump water heater, exhaust ventilation equipment, refrigerators/fridge and Freezer ... at any time. 556x167 fan blade for 5HP heat pump water heater,22' fan