Schlüter®-DILEX-KSBT is a maintenance free movement profile to bridge structural joints within tile and natural stone coverings. Schlüter®-DILEX-KSBT assists in reducing the transmission of impact sound. If the closed movement zone is unable to absorb movements, the joint spacer can be cut open. In this manner, the 20 mm wide insert can absorb movements of ± 5 mm and the 30 mm wide insert, movements of ± 10 mm. The profile can be used in floor areas as well as wall areas, for a continuous, uniform appearance. It is particularly suited for use in walls and ceilings made from gypsum board panels; it can also be integrated directly into the plaster or mortar screed. The trapezoid perforated anchoring legs, made of stainless steel or aluminium, are connected by a 20 mm or 30 mm wide, soft movement zone made of thermoplastic rubber. The rubber insert can be replaced in case of damage.