Delta Faucet Company’s Multi Choice” Universal Valve tub/shower valve system simplifies installation for plumbers, builders, wholesalers and consumers. The unit allows for easy shower upgrades, eliminates the wrong valve from being installed, saves valuable shelf space with reduced packaging size and utilizes existing Delta brand trim packages. It enables trade professionals to make functional and stylish trim changes without ever changing the valve in the wall. One valve offers three options: single-function pressure balance, dual-function pressure balance and a new dual-function thermostatic valve cartridge. http://www.deltafaucet.com