OBOS-301 - Gas One Stop Box 1/2" MIP x 1/2" FIPLSP OBOS 301 Gas One Stop Box 1 2" MIP x 1 2" FIP Quarter Turn Ball Valve for easy shut off. Valve is CSA and AGA approved. Included debris cover protects until the finish stage, drain guard to retain slow leaks and integrated mounting system that allows the installer to secure box with nails, screws or hyco straps, universal face plate and available faceplate extension that is stackable to each additional layer of 5 8" drywall.