roof exhaust fans880-A---prote

Products Name:turbine ve
Quantity:min20sets
Packaging:by boxes
Full Size:according
Place of Origin:Shanghai
Appearance of Type 880-A
blade:36
height:750mm
turbine diameter:880mm
ventilation caliber:680mm
bottom plate aperture:680mm
Advantages of Type880-A
1Non-power natural ventilation fans are favored by many businesses for their energy-saving and environmental protection, the 880-type fan with its large-caliber breathing ability is especially favored by chemicalplastic and other special Industries.
2Its high-quality body can withstand long-time wind and rain; resist the erosion of corrosive gases indoors. It can be durable eternal lubricant and no maintenance for its excellent low resistance sealed bearings.
3Wave-shaped leaves is designed based on the accurate hydrodynamics principle, increased the interface and angle between the fan and wind. It also can get a greater rotational force in the breeze, avoiding the wind of all direction into the air duct, accelerating the rotati