These slate blue enclosed carts allow for dirty dishes and trash to be unseen. Bussing tables can be more discreet and cross contamination can be eliminated. These enclosed carts have a top shelf with raised lip where fresh food can be placed and not slip off. The bottom 2 shelves can store bus boxes for used dishes. The 33 1/8" x 20" x 34 5/8" unit has 2 right and 2 swivel casters that allow for stability and maneuverability.