A brace for mounting an electrical box between supports includes a central body with a pair of elongated sides each having a first end and a second end. The central body also includes a top surface connected between each first end. Rails are connected to each second end and extend substantially along the length of the pair of elongated sides. The brace also includes a first connecting end connected to a first end of the central body and a second connecting end connected to a second end of the central body. The central body, the first connecting end, and the second connecting end are integrally formed in a one-piece construction. Each rail is spaced apart from at least one of the first connecting end and the second connecting end to form a mounting space.