The developments that have been made to this cabinet, derived from actual installation practices, and the many detailed improvements that have been made considerably reduce the mounting expenditure related to the A wall-mounting cabinet, thus resulting in cost benefits for the user. Of course, the highest quality standards are also met. The robust basic housing with an inlying door is made of sheet steel, which means that it retains its shape even under considerable strain. The outward appearance has been designed with a wide range of applications in mind and the standard lock design adds a certain special something. The A wall-mounting cabinet is prepared for expansion by means of meter panels, distribution panels, combination sets or the CombiLine N modular distribution panel system.