- It is matched by an external rotor backward inclined centrifugal fan.
- The air inlet and air outlet can be connected with circular duct of the same diameter.
- The installation is simple, which can greatly save the cost of duct design and installation.
- The utilty model has the advantages of large air volume, high pressure, low noise, low power con-sumption,long life, etc.
- Widly used in homes, apartments, villas, offices, meeting room, shopping mall hotels, restaurants, cin-emas, dance halls, stations and other places.