The Serin Shower Trim balance integrated shower diverter trim by American standard is perfect for the contemporary bathroom in design and functionality. When paired with the exclusive flash rough-in integrated shower diverter valve, sold separately, you can easily alternate between water outlets. The serin trim coordinates beautifully with the entire serin collection. Requires to flash rough-in integrated shower diverter valve ru521 with 2-outlet capability or ru531 with 3-outlet capability.