Abstract: Spaced hollow vertical posts are supported by base means. Each post has a pair of spaced substantially coextensive vertically elongated flat panel bars of substantial thickness with vertical opposite side edges and a series of vertically spaced shelf bracket connection apertures intermediate the edges, there being a pair of substantially coextensive vertical opposite side channel members of relatively thin gauge material to which the side edges of the panel bars are secured in edgewise abutment. Stabilizing bar means have angular attachment terminal tongues or vertical finishing strips may be engaged with transverse attachments straps on the channels. Gusset members in the base structure support the posts and are formed from horizontally elongated vertically standing panels having plate attachment structure at their ends. The base includes detachable shelf and trim structure.

Abstract: An angularly adjustable shelf supporting bracket of the type provided with a plurality of vertically spaced retaining fingers on the butt end of a shelf-carrying arm has shoulders on the upper edges of the fingers shoulders facing toward the butt end for angular position determining engagement with bars across the tops of openings in a upright supporting structure, and shoulders on the lower edges of the fingers facing toward the butt end and engageable with the bars along the lower sides of the openings for interim holding of the bracket against dropping away from the supporting structure when adjusting from one angular position to another.