Get rid of the outdated style of a protruding supply valve, and give your bathroom wall a cleaner look, with a concealed supply outlet box. This unobtrusive supply shut-off is easy to install, is low-profile instead of the whole supply valve sticking out of the wall, and is paintable to help it blend in with your décor. We are pleased to offer this ingenious solution for supply stop installations. These washing machine outlet boxes provide quick, safe, water supply shut-off access. Complete with knockouts for waste or water lines, the box provides a recessed space for your supply valves. Heavy-duty mounting straps and an adjustable faceplate are also included. These boxes are designed to install in panel, drywall or plastered surfaces, and provide a finished look to your installations.