... photos: SpecificationsApplication: HVACR Equipment, Machinery, Air Source Heatpump etc.Function: Ventilation, Cooling, Heating, Air Conditioning, Draft Inducing, Air Refreshing, Air Circulation and so on. Features1 ... the vanes:4 pcsInstallation Hole Diameter:Φ8Rotation Direction:CWApplication: Air Conditioner, Heatpump, Ventilation, Heater, Cooling etc. The Company's Profile: Yuyao City ...