It is preferable, for this reason that both top service tray 24 and lower service tray 26 be made from painted wood or plastic or other polymers sothat these trays are easy to clean and highly resistant to damage from chemical fluids.Nonetheless, door frame 32, curtain walls 14, cabinet frame 33 and domed arches 28 may be made from a decorative hardwood such as oak, birch, cherry and the like to p