ALLboards CLASSIC WHITE glass boards have a slightly greenish hue, related to the natural shade of glass. They are made of 4mm thick tempered safety glass. If dropped, the glass will break into lots of tiny pieces which will be retained on the surface by a special layer. The surface of glass boards has dry-wipe properties (you can write on it with glass board markers or chalk markers) and magnetic properties (you can attach neodymium magnets to it). The edges of each board are ground and the corners cut to right angles, giving the board a slim effect. CLASSIC glass boards are available in many sizes, ranging from 40x60cm to 240x120cm. Can be installed vertically or horizontally.