Raceway mounted channel letters are attached to a long, narrow rectangular aluminum box called a raceway. The raceway contains all the electrical components such as wiring and power supplies. Instead of each individual letter being mounted to the raceway which is then mounted to the building. Raceway mounting is ideal for applications where local codes, building owners, or the faced of the building prohibit direct mounting. Raceways allow for easier installation and service and can be painted to match the wall.
Unlike raceway mounted channel letters, direct mounted channel letters are attached directly to the surface of the building. The wiring is then fed through the wall to an interior cavity where the power supplies are located. Direct mounted channel letters are cleaner looking but also require more installation time, cost, and drilling of holes into the building.