Cable routing duct made of sheet steel LFS 30x45mm galvanized. Electrical installation duct system Cable routing duct made of sheet steel in accordance with DIN EN 50085-1 for laying cables. Duct bottom/top with pre-punched holes in the bottom at 200 mm intervals. Couplings for the potential equalization connection of the duct bottoms and for simple and precise duct connection. When installed overhead, the duct must be mounted with sheet steel clamps. Note: Potential equalization, earthing, sound and fire protection measures must be carried out professionally.