GS device installation duct for mounting on the wall or on mounting brackets. The GS device installation duct has self-contacting locking tabs for holding a partition made of sheet steel. The potential equalization between the lower sections of the duct is carried out via the coupling. The protective measure and potential equalization between the upper section and the lower section is ensured by the patented, self-contacting duct cover. The actual system opening is 76.5 mm. The upper section must be ordered separately.