Quartet Enclosed Bulletin Board, Natural Cork/Fiberboard, 72" x 48", Aluminum Frame: * Display and protect information behind clear, shatterproof acrylic locking doors * Information is easy to update and change * Thick self-healing natural cork holds push pins tightly and provides an excellent, resilient tacking surface * Each board has a dense fiberboard backing, sealed to reduce moisture absorption and resist warping * Full-length hinges