The wall aperture encasement fits around the outside of the installation duct (1,2). It is assembled from prefabricated components (20,40,50), including four corner elements (20.1-20.4), each having a pair of perpendicular retaining tongues at the rear, with perpendicular retaining springs, cooperating with retaining noses of wall holders. Profile rails (40.1-40.4) are matched in length to the size of the wall aperture. They are fitted between the corner elements, with a slider (50) allowing fixing of the encasement after positioning in front of the wall aperture.
展开▼
