Abstract: Shelf retaining collars function to releasably attach shelving to a plurality of vertical support posts. Each collar has an open front face for placement of the collars around the support posts. Also, each shelf retaining collar has a frusto-conical interior surface, and a pair of upwardly extending shelf supporting hooks that extend outwardly from the open front face. When the shelf retaining collars are attached to the support posts the hooks engage and support the shelving. Such shelving may be mounted horizontally or angularly, if desired.

Abstract: A reinforced shelf mountable to spaced apart vertical support posts by a plurality of collars generally forming the corners of the shelf is provided. The shelf is formed by a plurality of transverse members, such as wires, attached, such as by welding, to a plurality of longitudinal members. The transverse members and longitudinal members at the outer edges of the shelf are connected to the collars. At the front edge of the shelf, a load bearing truss is provided that features (a) the longitudinal member; (b) a longitudinal bar, spaced apart from the longitudinal member, attached at its ends to the collars; (c) a serpentine member, having upper and lower bends, attached at its upper bends to the longitudinal member at the front edge of the shelf and at its lower bends to the longitudinal bar; and (d) a reinforcing bar attached at its ends to the collars and attached along its length at points of contact to the end portions of the transverse members.