The wall writeboards non magnetic: our products of boards fixed on the wall nonmagnetic are of colors black, white and green depending on the client's choice. These boards are easy to write on easy to erase. Covers of non magnetic and seminal boards are made from aluminum completely. Use chalk on boards of green and black surface, use the marker special for the whiteboard boards with white surface. Do not use stylus for cd or non-erasable on whiteboards.