Fabricated cable tray wall sleeves from Legrand, provide safe, rigid and aesthetically pleasing support at a wall requiring cables to continue through the wall. Legrand wall sleeves, WPS, are an economical alternative to the support and finish issues of having cable tray penetrate wall and/or floor. This WPS system provides a rigid support for cable tray. After the sleeve is placed in the wall or floor, the loose collar slides over it. Hardware for the tray connection only is included. Hardware required to mount sleeves to the wall or floor is not included.