It is used for supplying and extracting air applications for bathrooms, kitchens and external walls of the buildings. Circular outlet inside is mouted by blade, stainless steel insect net, and there's three snap links in the outlet neck. When install this type of circular outlet, just push the the circular outlet into the round hole in the wall, and then fix it by stucking the three snap links. Bolt and screw is not needed. Circular outlet can prevent water spashing into indoors while it can be a decoration of the exteranl wall.

1. Materials: aluminum with powder-coated or galvanized sheet.

2. Neck size/surface size : can be adjusted as customer's requirements.

3. Colors: white can also follow customer's requirements.