1. Principle & Characteristics  

    DWT-IV series non-power wind driven roof ventilation fan is environmental-friendly natural ventilation equipment. The indoor & outdoor air pressure difference formed by pressure of rising outdoor breeze or indoor hot air realizes automatic swivel. It is widely applied for ventilation and air displacement in factory plant, flower greenhouse, poultry houses and all kinds of buildings.

2.Application 

   Best choice for industry,warehouse,hosipitale ,etc to make air convection 

3.Features 

 1.Environmental protection: no power,no noise, no spark,no explosion

 2.Good venting effection, turbo pantent technology

 3.We could produce the basic casing according to customer's dimension, and carry on the installation

 4.Withstand severe rain and wind

4.Model and Parameter

5.Drawing and installation size

6.Why  to choose us    

 1.Low MOQ:  As we are the OEM , small MOQ can be accepted 

 2.Good Quality : We have strict quality control system .Good reputation in the market.

 3.Special design: Special requirement can be accepted ,we have professional designers .

 4.Good service : We treat clients as friends .

 5.Fast & Cheap Delivery: We have big discount from forwarder (Long Contract).

 7.Product Pictures

8. Contact information 

Skype :yunwng8826 (8:00-22:30 is available and welcomed)

QQ : 2850382039

Wechat :982585659

Mobile: +86-18072170652

Email: please send inquiry as below