Alan Brubaker emailed me yesterday to say he had five white ABS plastic 8x20 trays available that his buyer cancelled on. I'd have bought them, myself, but cannot do it at this time. They are 5" deep and nest. I assume the 5" depth allows user to place them, literally, butted next to each other without fear of chemical splash from one to another. To have 5 trays within a 4-foot space would be great in my own case (considering my space limitations).