Unpowered Roof Ventilation Fan Metal Wind Driven Powerless Turbine Ventilator No Power Cowl Vent Cover

300mm Diameter No Powered Aluminum Roof Cow Ventilator

1.Specifications / structure

1). Material: made of stainless steel by stretching forming, attractive appearance, no rust,  

2). Bearing: wholel sealing bearing, which can ensure it operates smoothly and constantly.

3). Special central shaft design, high-class lubricating bearing system: preventing turbine blades

rotating at high speed from deformation, and extending the service life.   

4). Inside support frame: stainless steel

Technical parameters

2.Advantages 

1). Automatically running. wind drive. One time investment, no anymore cost.

2). No operating cost, no electricity consumption, environmental protection, energy-saving.

3). No need maintenance, long life working.

4) Light weight, strong and durable construction.

5) Weather resistance,  self-cleanness, high revolving sensitivity and high air venting efficiency.   

6) Easy installation:.installation position: flat roof, pitched roof, concrete roof and contour plate of 

various industrial plants.

7). waterproof efficiency may reach 100%. 

3.Function:

1). Exhausting turbid, humid hot air to exterior and supplying fresh air to interior.

2).Produce air convection as a heat radiator, reducing indoor temperature, increasing air fresh.

3).Reduce air conditioning load, increasing the cooling effect

4.Low noise of environmental protection: Low rotational speed air blower , high to lure swimming skill eliminate noise cushion , streamline shape charge water device effective cooling tower impact on environment , DFN of control ,.

5.Attractive and durable: The shape of the tower is beautiful , merge with the building perfectly; Top layer is it import colored glue clothing to adopt, include ultraviolet absorbent inside,fade. Customers can choose the body color of the tower according to user’s enquiry. The tower body is light and handy  Adopt FRP composite in a large amount, fever for Israel soak zinc light-duty steel as skeleton, pass Solid Edge CAD optimization design.