Schlüter-LIPROTEC-WSD is a diffuser lens made of plastic that provides direct lighting for on-wall structures. It is inserted into the LIPROTEC-WS, -WSK or -WSQ profiles via the LIPROTEC-ES LED strip. Depending on the application (e.g. installation in the corner area or integration into the covering), the degree of direct lighting can be individually determined. The diffuser lens is designed such that it can be replaced even in installed condition.