... fan impeller 3. Plastic fan 556x167 fan blade for 5HP heat pump water heater,22' fan Outer Diameter: 556mmHeight:167mmShaft hole diameter:15mm ... high, good material, durability and other characteristics, it is air conditioner, air energy heatpump water heater, exhaust ventilation equipment, refrigerators/fridge and Freezer of ... us at any time. 556x167 fan blade for 5HP heat pump water heater,22' fan