Bottom section C-profile steel for BRS 85x210mm top section 120mm pure white. Bottom section of the electrical installation duct system. Parapet duct made of sheet steel 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 front-locking, tool-free device installation for fastening devices, device installation boxes with quick fastening. With top section width 120 mm C-profile device installation. Couplings for potential equalization as well as for simple and precise duct connection, partition walls and cable retention clips available as accessories. Note: Potential equalization, earthing, sound and fire protection measures must be carried out professionally.