A shelving unit including three wall clip/brackets and a shelf pivotally attached to the clip/brackets. Each clip/bracket includes a mounting engagement portion and a pair of parallel, extending arms. Each arm has a curved slot, and a pivot hole positioned above one end of the slot. The arc of the slot sets the other end of the slot higher. The shelf is pivotally bolted to the clip/bracket. A pin pivotally passes through the curved slots of the pair of arms and engages the shelf. One of the three clip/brackets has an additional vertical retention slot at the lower end of the curved slot. The shelf is pivotable to a first, substantially horizontal position with the pins at the other end of the slots, and to a second, substantially vertical position with the pin of the one of the three brackets being in the vertical retention slot of the one bracket.