Abstract: A plastic molded, upper dishwasher rack and support assemblies are described. In one embodiment, the upper rack is supported by first and second upper rack support assemblies, and each support assembly includes an elongate slide member and first and second roller assemblies secured to respective sidewalls of the tub. Each elongate slide member includes a channel, and upper and lower flanges. The rollers are located within the channels so that the slide member is movable relative to first and second rollers. Front and rear caps are secured to a front end and a back end, respectively, of each slide member. The flanges and caps facilitate retaining, or trapping, the rollers within the channels. In addition, the front caps have stop members extending inwardly towards the upper rack and cooperate with the upper rack to limit the extent to which the upper rack can be withdrawn from tub.