A conduit box includes a first rear wall and a second rear wall spaced apart form the first rear wall to form a stair-stepped rear wall of the conduit box. The conduit box also includes a top wall, bottom wall, a first sidewall, and a second sidewall. The top and bottom walls have a substantial “L”-shape. The second sidewall has a length that is greater than the length of the first sidewall. The conduit box also include a rear sidewall extending from the first rear wall to the second rear wall.