Wall boxes in various types: single, one-and-a-half, double and smart, i.e. with additional wiring compartments. Flexible solution with double and triple muffs. The boxes have at least three 16 mm tube inlets that are easily removable and fit 20 mm tubes. All tube inlets have metal springs for the locking of K tubes. Those with 8 tube inlets have six 16/20 mm tube inlets, as well as two outright 16 mm tube inlets. The muffs are dismountable, and it is possible to attach multiple boxes to one another to make combinations. Comes with polished cap and sealing plugs.