Ghent's Porcelain Magnetic Whiteboards with 28-gauge porcelain-on-steel surface is mounted to a 3/8" backing for extra strength. The durable porcelain enameled surface keeps the dry erase board from scratching or denting, even when installed in high-traffic schools and offices. Features: Sized from 2'x 3' up to 4' x 16' Magnetic porcelain surface that resists staining, scratching and ghosting to ensure long lasting dependability /Choose between a Satin anodized aluminum and handcrafted wood frame /Detachable SmartPak tray for easier installation and reduced potential for damage /Carries a 50-year manufacturer warranty