Two-Piece M2 Non-Magnetic Whiteboard with Aluminum Frame, 144.5" x 48.5", White Surface, Satin Aluminum FrameSturdy and practical with excellent write on wipe off qualities, Ghent's M2 Non Magnetic Whiteboards provide years of reliable performance at an affordable price point. To ensure long lasting durability, non magnetic M2 board surfaces are applied to a quarter inch thick hardboard backing, which is then enclosed within a satin finished, anodized aluminum frame. For added convenience, M2 boards also include a detachable Smart Pak board accessories tray