Main charactoristics of model 300-II
Blades: 20
Total height: 400mm
Turbine diameter: 430mm
Ventilation caliber: 430mm
bottom plate aperture:300mm
Brakets and bearing material:stainless steel
according to the differences of material,the price has a rangement from USD19 to USD38.The material can be of 201#.202#,304#stainless steel.
Advantages of model 300-II
1.Use the power of wind insead os electric,so energy saving
2.Save business cost
3.ventilate well
4.Can continue working for about 10 years
5.Easy to install