Grohe Allure New Single Function 2-Handle Thermostatic Valve Trim - 29177Grohe Allure New Single Function 2 Handle Thermostatic Valve Trim 29177 Thermostatic valve trim with dual handle control for precise temperature stability and smooth water flow. Features Two handle design for separate volume and temperature control Upper handle controls water volume and on off Lower handle controls temperature GROHE TurboStat maintains consistent water temperature GROHE SafeStop limits temperature to 100F (38C) to prevent scalding