Simply tie it 4 times and you're done. 70% time saved during assembly. The wings make it easy to maintain a standard distance of 15 cm from the door formwork. The boxes can be combined, and the SCS technology means that an absolutely solid connection can be made. Suitable for concrete ceilings from 20 - 60 mm. Suitable for pipe inlets 2x M32 and 4x M20/M25 or 6x M20/M25. Due to its size, the box can also be used as an electronics box. Thanks to the wings, no counter bearing is necessary. The lid can be easily put on the box.