Channel letter signs, which are also referred to as halo lit letter signs or back lit letter signs, are signs that are typically illuminated with Neon. Channel letter signs are often used by business owners to display information to their customers. One type of channel letter sign is the raceway mounted channel letter sign. The letters on these signs are attached to a box called a raceway, which is a long rectangular box. This box helps with mounting the letters and also serves as a housing for all of the wiring, electrical components, and transformers needed to make the light function. Channel letters within a raceway are generally easier to install in a sign than those letters that are individually mounted. In addition, channel letters are easier to wire inside of wall because it only requires pushing a few wires through rather than several. Channel letters can also be mounted directly onto the wall. Most people prefer the way individually mounted letters look better than those that are on the raceway. When mounting these letters individually, the person hanging the letters must lay out a mounting pattern directly on the wall where it is to be added. Then, holes are drilled for the letters and for the electrical components. Since this process takes a bit longer, it is usually more expensive than those installed with a raceway.
Another type of channel letter sign is the open face channel letter sign. These signs are built in a manner similar to standard channel letters, though they can be mounted either on a raceway or individually. Open channel letters are not actually “open.” Rather, these letters have a clear face rather than a colored plastic face. By having a clear face, this type of channel letter sign allows the neon tubing to show through. This makes the sign even more noticeable and nighttime. Channel letters with a colored face tend to overshadow the brightness of the neon light. Channel letters can also be reverse. Reverse channel letters have metal faces as well as returns on the sides of the letters. These channel letters also have a clear plastic backing and are designed for mounting just an inch or so away from a wall. As a result, these channel letters tend to have a halo-lit look at night.