These are a robust wall box designed to be built into either a brick, block or poured concrete wall recess, such as subways, tunnels or bridges. They are available in a range of sizes, and the side faces of the box can be drilled to suit cable entry and exit positions. Gangable masonry boxes and partitions, extra deep one- to four-gang masonry boxes, and through-wall boxes with concentric conduit knockouts designed for use with concrete blocks. Streamline installation — Revolutionary brackets simplify the process of positioning and mounting electrical outlet. City Electric Supply provides durable Concrete Electrical Boxes ideal for masonry and concrete construction projects. Our selection includes masonry boxes and octagon concrete boxes from leading brands such as Centaur and Eaton–Crouse-Hinds, ensuring superior strength, corrosion resistance, and NEC. When wiring for concrete walls, choosing the right electrical box is critical for safety, code compliance, and a clean, professional finish. It requires the FBLEV-GY and a Leviton finished floor plate, which are sold separately, to complete the install. 25″ tall, 2-gang PVC box offers space for power and data conduit.