Buried base, KVS, kit, size 1, height: 900 mm. Profiled buried base in rib design, with angle steel fastening rail 40 x 40 x 3 mm for clamps as strain relief for cables. Pre-punched opening on the side, closable from the inside, when opening a cover d = 55 mm (accessory) must be installed. To prevent condensation, the base must be filled with base filler up to the height of the cable fastening rail. A floor grate is recommended for stability.