Designed for fast and efficient installation, the Flash Shower Rough-in Valve provides flexibility for every situation. The rough-in valve features a flat back and compact body to ensure a secure and simplified install process that can accommodate smaller spaces. The PEX elbow connections allow you to connect PEX piping directly to the valve, from floor or ceiling supply lines, without additional elbows. Equipped with a test cap, it allows you to quickly test or flush lines with ease. Stainless steel fixation ring, with sure-grip flats, keeps test cap and cartridge in place without screws. Cartridge sold separately.