Detailed Product Description

Roof Non-Power Fan Features:

                         
1) Natural wind drives, operating 24 hours of whole day 

                                                          
2) High sensitivity, slight wind or the range of temperature 
   can drive the blader to turn around

                    
3) Rotary stablely, quietly to improve the inner environment of room

                 
4) Using complete senior axis bearing, no lubrication, solid, low fault rote

                    
5) Corrosive resistance, acid and alkali proof, long service life