C-profile parapet duct bottom part for device installation made of PVC for BRN 70x210mm pure white. Duct bottom part for the electrical installation duct system, plastic parapet duct in accordance with DIN EN 50085-1 as a device installation duct. With bottom perforation for direct wall mounting and additional rectangular perforation for tool-free fastening of the duct using clip technology on brackets. With C-profile for fastening devices, device installation boxes with quick fastening and partition walls. With integrated base profile connectors for simple and precise duct installation. From duct width 130 mm with removable side tops for simple and quick cable laying and subsequent assignment. System carrier for dividing the base profile into three separate areas: two separate cable routing chambers and a device installation area. Note: Sound and fire protection measures must be carried out professionally.