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. Equipped with a test cap, it allows you to install, test and flush lines with ease. Stainless steel fixation ring, with sure-grip flats, keeps test cap and cartridge in place without screws. Cartridge sold separately.