The Prowite magnetic porcelain whiteboard on steel whiteboards are the ultimate in dry erase writing surface.Fired at 800 degree C during production they have exceptionally hard, smooth surface finish that is long lasting and is sealed with a galvanized steel backing. The Prowite magnetic porcelain whiteboard now comes with a 50 year surface warranty. Trimmed with a stylish silver anodised aluminium frame the Prowite whiteboards are first in lightness and strength.