Wall trunking made of PVC to DIN EN 50085-2-1 for laying cables directly on the wall or on wall brackets, 80 mm cover for device installation of standard switch ranges in combination with appliance boxes or M45 built-in devices using front-locking adapter frames, base with four-row base perforation for fastening and a support rail for snap-in mounting of a plastic partition wall for cable separation. Couplings as an assembly aid and for easy connection of two base parts are also available as accessories. Note: Sound insulation and fire protection measures must be carried out professionally.