Abstract: A tray support bracket of unitary, one piece construction having leg portions diverging downwardly from a U-shaped upper end portion and terminating at their lower ends in attaching feet, the feet and upper end portion lying in substantially parallel planes extending substantially normal to the plane of the leg portions. Tray members have a first pair of foot pads for engaging the support bracket feet and a second pair of footpads for engaging the upper end portion of the support bracket. The tray members and support brackets are interchangeable, with the latter supporting the former in a vertically spaced, stacked arrangement of two or more tray members.