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BKK ducts are used to route and protect electrical and telecommunication cables inside buildings. Particularly often used to create all kinds of installations on the walls and ceilings of residential and industrial buildings. They provide IP4X protection against solids and IPX0 against liquids. They consist of a body and a snap-on lid. Fixed to the ground by screwing or gluing. Cable channels can be covered with various types of paints (acrylic, oil, silicone).