Delta’s dual-function thermostatic valve cartridge keeps water temperature consistent (within 3.6°) by measuring and monitoring the temperature of the water. Temperature can be set in order to remain consistent shower after shower. H2Okinetic Technology® sculpts water into a unique wave pattern, forming a powerful drench spray WaterSense® labeled shower uses at least 20% less water than the industry standard without compromising performance TempAssure Thermostatic cartridge measures and monitors the temperature of the water and automatically adjusts to maintain a more precise water temperature Trim only, must order MultiChoice universal rough-in R10000-UNBX separately to complete the unit Dial adjusts temperature and handle adjusts water flow 2.00 gpm at 80 psi, 7.6 L/min at 550 kPa Delta Ara 17T Series Shower Trim Set - Chrome