Channel letters are a formed or fabricated three-dimensional, individually illuminated letter or graphic. Channel letters are comprised of U-shaped metal channels into which neon glass is installed. Standard channel letters have a U-channel base with a colored Plexiglas face. Reverse channel letters have metal faces and sides, but a clear plastic backing. Mounted an inch or two away from the wall, at night these letters create a halo-lit effect. Open face channel letters have a clear plastic face which exposes the letter's raw neon.