3M™ Porcelain Dry Erase Boards feature a durable porcelain surface that will not scratch, dent, stain or ghost under normal usage. Magnetic boards have a galvanized steel backing for extra durability. High quality aluminum frame assures style and durability. Accessory tray included. Interlocking Fastener System includes mounting brackets plus Command™ Picture Hanging Strips to stabilize bottom of board. 3M™ Porcelain Dry Erase Boards are quality boards that are built to last.