United Visual Products' Top-Hinged Single-Door Letterboard Outdoor Message Center offers enough room to post all your announcements outside your school or facility. The large door is mounted on a full-length piano hinge that won't pinch fingers. High-density polyethylene won't rot, splinter or crack, and the finished back adds durability. This outdoor unit has a black, vinyl interior surface and comes with a 145-piece, two-inch Helvetica letter/number set. Lock the door (two keys included) to prevent theft and vandalism. Choose from three sizes. Available in six natural frame colors sure to blend nicely with your outdoor décor.