This modular message center and letterboard is an attractive, wood-framed enclosed case with an innovative interconnecting design that will grow with you. Using an attachment kit (included), you can create your own two-door unit, three-door unit or whatever size you need. Units may be mounted to open from either left or right side. Each case comes equipped with a keyed lock for additional security. Features oak framing and a shatter-resistant acrylic window. Interior: Black Changeable Letter Panel. Item CWK13624B. Measures 36" high x 24" wide. Ships UPS.