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. A flush plug is included, which allows both Hot & Cold to be flushed simultaneously for quicker installation and less downtime. Stainless steel fixation ring, with sure-grip flats, keeps flush plug and cartridge in place without screws. Cartridge sold separately.