IBT BWA reinforcement adapter for all U71 sockets. The adapter is an exposed concrete installation for opposing formwork without pre-assembly in reinforcement for concrete construction. U71 K GRO indicates the large tube sockets with fully insulated cable transition. These are suitable for all types of formwork and opposing formwork. If a tube socket is required for extremely thin walls, the installer will opt for the U71 FD variants in a flat construction type. The top end of the flat box is smooth for nail and adhesive fixing. Coupling sockets such as U71 KUD-M5 can also be used as ceiling boxes. The M5 threaded bushes can bear 10kg. The coupling boxes can be fixed with nails or magnets. Spelsberg has developed K4 EK installation boxes for concrete installations which are prepared for the installation of WK terminals. For example, 40-pin telephone connection strips can be accommodated. The halogen free K1 EK installation box is suitable for Zettler light call E1.
