Mounting options include: Raceway mount: A raceway mount is a rectangular metal box that runs the length of the sign and houses the wiring. It is often colored to blend in with the building. This mount reduces the number of holes required in the building wall. Backer mount: A backer mount is similar to a raceway mount, except the channel letters are mounted onto a metal cabinet containing the wiring. It acts like a frame and can be made in custom colors. Direct mount: With direct mounts, individual letters are attached to the face of the building and require several holes each. This design can look very effective but requires more marking of the building’s surface.