http://tinyurl.com/p8y65elKOHLER K-693-K-NA Luxury Performance Showering Package ValveProduct Review Click on the link for more reviewsThe combination of a HiFlow Rite-Temp pressure-balancing valve and a 3-way transfer valve allows multiple components to function properly in a custom shower to maximize your experience.Combines with a front-of-wall component package to complete a luxury performance showering packageRequires component package to complete the system, options include Devonshire trim (K-10855-4), Fairfax trim (K-10856-4), Bancroft trim (K-10858-4) and Forte trim (K-10857-4)Premium material construction for durability and reliabilityThis valve package completes the behind-the-wall components needed for the Luxury performance showering packages.