Hygienic Porcelain Magnetic Whiteboard with Aluminum Frame, 87.91" x 48.5", White Surface, Satin Aluminum FrameCombining a superior porcelain writing surface with the hygienic properties of silver, Ghent Hygienic Porcelain Magnetic Whiteboards were made for self sanitizing convenience. Micro silver particles embedded in the porcelain on steel surface are slowly released over the product's lifetime to eliminate bacterial and viral contaminants within 24 hours of contact. That hygienic, scratch , dent and stain resistant surface is then mounted to a hardboard