I built a cart (20'' X 24'' by 37'' tall including rollers). It has the top shelf + 3 pull-out shelves which I can stagger like a ladder set-up. I can wheel it over next to a sink, and in a couple of minutes I'm ready to start processing. The shelves hold up to 4 16X20 trays so can handle developer, stop-bath + 2 fixer solutions.