Abstract: An auxiliary shelving system for increasing the capacity and safety associated with conventional storage shelves includes a horizontal top wall having a pair of sidewalls depending therefrom. Each sidewall terminates at a lower edge having an inwardly extending lip. Each lip includes a plurality of pegs that can be inserted into apertures on store shelving or on the top wall of another shelf allowing the devices to be securely stacked. The configuration of the auxiliary shelf enclosures can be varied to include front, rear or lower walls.