Display and protect information behind clear, shatterproof acrylic locking doors. Self-healing natural cork holds push pins tightly and provides a resilient surface that makes it easy to switch out information. Dense fiberboard backing adds stability, and is sealed to reduce moisture absorption and resist warping. Full-length hinges. Includes mounting hardware. Board Type: Enclosed Bulletin; Board Width: 72 in; Board Height: 48 in; Board Depth: N/A.