Valve for outdoor air intake and extract air discharge. Designed with a fixed louvre, 80–500mm is equipped with a insect net. Mesh width 10×10 mm. Screws, sealant or nails can be used to connect to an external wall.

Valve for outdoor air intake and extract air discharge. Designed with a fixed louvre, 80–500mm is equipped with a insect net. Mesh width 10×10 mm. Screws, sealant or nails can be used to connect to an external wall.