Abstract: A shelving unit comprises a pair of ladder-like members each formed from two vertical elements connected by a plurality of horizontal elements. Several interchangeable generally rectangular shelves rest upon respective opposed pairs of the horizontal elements. Each of the shelves presents a recessed area along three of its edges which receives an adjacent edge of a U-shaped wall element. At least one, and preferably the front two, of the vertical elements provides a lighting tube for allowing illumination of displayed goods. The shelves can be rearranged without altering the electrical installation for the lighting tube. A series of the shelving units can be formed as a display cabinet, which can itself be formed as an enclosure to which access is gained through a covered entrance way constituting an information region.