Abstract: Modular housing system for electronic equipment. A modular housing system for electronic equipment, particularly in the field of data technology, has capping pieces of extruded sections provided with guide grooves in a longitudinal direction that are modularly joined with corner nodes and connector elements adaptable for the respective utilization. Particularly in the field of data technology, it is necessary to be able to undertake a structuring of electronic equipment that is fast, variable and simple to construct. The modular housing system has grooves with a keyhole-shaped cross section and proceed along the edges of the respective lateral surfaces of the capping pieces on verges thereof and/or parallel thereto. Bores are provided in the end faces of the capping pieces and the edges or verges at which no guide grooves proceed and a further bore is provided in the center of the cross section of the end face of the capping pieces.