This Indoor Enclosed Letterboard is constructed of a solid oak frame. Black felt letterboard interior. 290 piece Helvetica letter set included. Shatter-resistant acrylic window. Doors have sturdy hinges and a solid disc tumbler lock (two keys included). Case Dimensions: 3/4″ wide main frame, 1-1/2″ wide door frame, 2″ exterior depth, 5/8″ interior depth. Includes 3 doors. Black interior, Walnut frame finish. 72″W x 48″H overall.