The board surface is made of tempered glass (4mm thick). It has sanded edges to right eagle. The glass is thermally toughened. As a result no sharp-edged fragments are created. In the event of a breakage  the risk of any cuts and impact injuries is reduced, since the glass breaks down into many small, slightly rounded and far less dangerous fragments. The glass board can be mounted vertically or horizontally on the wall and protrudes approx. 5mm from the wall. Similar to other common fastening systems, such as cabinets hanging in the kitchen, the boards are placed on rails from the size of 120x90 cm, which are included.