ventilation fan980-B---protecc

Products Name:roof exhau
Quantity:min20sets
Packaging:by boxes
Full Size:according
Place of Origin:Shanghai
Appearance of Type 980-B
blade:42
height:800mm
turbine diameter:1000mm
ventilation caliber:960mm
bottom plate aperture:780mm(upper round)950*950mm(down square)
Advantages of Type980-B
1.Solid and corrosion-resistant, 10 years warranty.
Use the theory of natural wind power, but not the motor, electricity. Operate with no cost. Turbine ventilation keeps running automatically without any noise, it also has very good capscity in exhausting gas, dust, eliminating the stink, lowering the temperature, and dehumidifying the moisture. It is durable, quiet, reliable, no electricity cost, free maintenance.

2.Axis and bearing
All the ventilation adopt American UCB completely closed bearings, free lubrication. Support brackets are all made by stainless steel, which has very good corrosion-resistant ability

3.The blades can be bent, and are designed by stamping, which can bear the