This Halo Lit wall mount sign shines through its clear polycarbonate (Lexan) back, creating a halo effect. The letters are spaced 1–2 inches from a flat cut out aluminum backer, which is mounted flush on an exposed wireway attached to the building wall. To streamline installation, the letters are preassembled onto the wireway in the shop as a single unit, saving valuable time during field installation. The exposed wireway is a smart choice for minimizing wall penetrations and provides a low-profile alternative to raceways. Designed for routing electrical wiring, wireways do not house power supplies internally, as power supplies are self-contained within a letter.