The TONALITY base clinch rail system (BAS) can be fixed to a vertical primary substructure of wall brackets and T-sections. Joint and support profiles are already firmly connected to each other in the factory. Different joint profiles enable additional design possibilities. Available as external corner solutions are the TONALITY 90° external corner profile for mitred corners as well as the TONALITY 30 x 30 mm external corner profile for open corners. Reveal and lintel profiles are available for fixation of tiles in window and door areas. The system components are complemented by the universally applicable BAS Flex holder.