Best-Rite's Porcelain Steel Magnetic Dry Erase Board with Aluminum Frame and Map Rail makes an excellent choice for your classroom or boardroom. The porcelain-on-steel surface resists scratching and erases easily without ghosting. An aluminum frame adds stability and includes a full-length, enclosed tack rail along the top. Full-length accessory tray provides plenty of room for keeping markers and erasers. A Greenguard certification means you can feel good about having this markerboard in your classroom. Backed by a 50-year guarantee.