Ghent's Unframed Magnetic Markerboard is a great way to put a dry erase surface in your office without breaking your budget. You can retrofit the whiteboard into existing boards or install it into custom frames. The porcelain-on-steel writing surface resists ghosting and scratching and has a 50-year guarantee. Accepts magnets without harming the surface. The half-inch thick particleboard backing keeps it sturdy.