Cable laying and for a laying-out of the energy and communication lines. Another possible application is a protection of already installed underground cables. The protectors consist of two identical parts. When installing, the cables are put in the bottom part and then the top part is snapped to the bottom one. Connecting of protectors is performed by overlapping joined lower parts with an upper part at length of approximately 30 cm. The divided cable ducts are manufactured and tested in accordance with standard ČSN EN 61386-24.