Ghent - GHEM1464 Markerboard features heavy 28-gauge porcelain steel surface, the hardest markerboard surface available, on a 3/8" backing for years of dependable service. Surface resists scratching, denting, staining and will accept magnetic accessories. Full-width marker tray is detachable to lower damage potential. Includes "L" bracket hangers for easy mounting. Writing surface is aluminum framed.