Promote your business or next event with a flat panel sign! Some different types of flat panel signs are yard signs, building signs, street signs, directional signs and post and panel signs. These signs can be made from a variety of material including aluminum, coroplast, dibond (aluminum composite), MDO sign board, wood or plastic. Many of the materials can be custom cut to shape to help you business stand out. The signs can be mounted on yard stakes, directly to a wall or between posts.