Safely display information for your students with Ghent's Indoor Enclosed Letter Board with Three Doors. Lock the shatter-resistant acrylic doors to keep vandals from tampering with your messages. The indoor/outdoor units have vinyl letter boards, a special backing and strong aluminum frames; the indoor units have felt letter boards and your choice of wood or aluminum frames. Choose from four frame styles and a number of sizes. Includes a set of 3/4-inch plastic Gothic-style letters, numbers and characters.