SBC schoolboards are made of 0.5 thick  ceramicsteel burned at 800o C. The back side is reinforced by 0.5 mm thick galvanized steel, the filling is 8 mm thick chipboard.
The frame is made of plastic or aluminium profiles with rounded plastic corners. The chalk shelf is produced of a special aluminium profile, with an inserted plastic sponge holder and with the plastic protection at the edges.
Writing surfaces in two colours
- green (matt) for chalk writing
- white (shining) for feltpen writing
- white (semi shining) for feltpen writing and projection
By the special thermical proces an extraordinary durability of the writing surface has been achieved. There is a twenty-five-year guarantee for the writing surfaces. |
