is a cement bonded particleboard CETRIS® of rectangular formate and thickness 28 mm with the size of 1 250 x 250 mm, cut from CETRIS® BASIC board.
The top edge is provided with a double-edge, side edges are milled to allow joining (tongue+groove).
Boards may be cut, drilled or milled. Boards may be set in concrete, or directly in a groove to be filled with soil later.