A wire sideplate (102) is disclosed for use with various shelving assemblies, including use within a wire sideplate frame (100). The wire sideplate (102) includes a ladder connector (114) having a flattened configuration. The sideplate (102) also includes an upper sideplate arm (116) and a lower sideplate arm (118). The sideplate (102) is composed of a single piece of wire which is formed and then pressed or stamped so as to be releasably interconnected into a number of different types of cantilever ladders (194).