CPM/Delta ABS Plastic sinks are super tough. Compact one-piece construction fits where other can't. Ribbed botton for rapid draining. Thermoformed from black 1/4″ ABS. 10 year limited warranty. The Sink II has a 13 inch backsplash and side splash guards. Drain is in the center back part of sink. The 4 foot version is perfect for small labs. Holds four 11×14 or two 16×20 trays.