Ghent's Centurion Magnetic Markerboard with Aluminum Frame withstands years of heavy use in your office and stays looking great. Sturdy 1/4-inch hardboard backs this porcelain-on-steel whiteboard. The writing surface accepts magnets, resists ghosting and scratching and is guaranteed by a 50-year warranty. This model's accessory tray ships unattached, allowing for more efficient shipping.