Grohe Grohtherm Dual Function 2-Handle Thermostatic Valve Trim - 24133Grohe Grohtherm Dual Function 2 Handle Thermostatic Valve Trim 24133 A dual function thermostatic trim with integrated diverter, designed to deliver precise temperature control and easy switching between shower outlets in a clean, contemporary layout. Features Thermostatic valve trim with integrated 2 way diverter Upper handle (AquaDimmer) controls on off and outlet selection Lower handle controls temperature GROHE TurboStat compact cartridge