A wall assembly includes at least one horizontally extending rail having a rear surface adapted to engage the wall. A plurality of horizontally spaced and vertically extending stiles are coupled to the rail, with the stiles disposed forwardly of the rear surface of the rail. A plurality of interface components are coupled to the plurality of stiles. In various embodiments, the stiles may be interconnected to draw together adjacent interface components. The interface components also may include overlapping upper and lower edges. The stiles may be vertically and/or horizontally (laterally and longitudinally) adjustable relative to the rail. A lock member may be provided to secure at least one of the stiles to the rail. Various systems and methods of assembly and use are also provided.