Abstract: A wall panel includes an outer surface layer, an oriented strand board layer, and mounting channels. The outer surface layer includes an outer surface, an inner surface, and edges. The oriented strand board layer includes an outer surface, an inner surface, and edges, with the outer surface of the oriented strand board layer being attached to the inner surface of the outer surface layer. The mounting channels are defined along and between the edges of the outer surface layer and the oriented strand board layer, and define a region recessed from the edges of the outer surface layer and the oriented strand board layer.