Hansgrohe Ecostat Modern 2-Handle 6-inch Wide Shower Rough-in Valve in Matte Black, 15712671 Thermostatic Trim. Hansgrohe 15712 Features: Covered under Hansgrohe’s limited lifetime Premier finishing process finishes will resist rusting and corrosion through everyday use Thermostatic valve trim only Temperature controld by bottom handle Top handle is on/off volume control for 1 outlet Anti-scald 100° safety stop Optimized for water-efficient shower products Rough-In valve 01850181 not included Hansgrohe 15712 Specifications: Valve Trim Height: 7-3/8″ (bottom to top) Valve Trim Width: 6-1/8″ (left to right) Flow: 6.0 GPM (22.7 L/Min). THOUGHTFUL DESIGN: German design and engineering delivers exceptional performance for all of your shower needs. EASY CONTROL: The top handle controls water volume to single outlet, and the bottom handle controls temperature and can preset desired water temperature within +/-1 degree F. FULL TEMPERATURE CONTROL: Thermostatic shower trims make setting your preferred water temperature easy, simply set your handle and enjoy your relaxing shower. ANTI-SCALD FEATURE: Anti-scald 100-degree safety button helps prevent the water temperature from exceeding 100-degrees F. BUILT TO LAST: Brass internal components compliment a polymer trim plate for a surface that is resistant to dents, chemical corrosion, and mineral accumulation.