Grohe Grohtherm Cube Single Function 2-Handle Thermostatic Valve Trim - 24157Grohe Grohtherm Cube Single Function 2 Handle Thermostatic Valve Trim 24157 A two handle thermostatic trim with a geometric cube design, combining precise temperature control and integrated volume control for a streamlined modern shower setup. Features Thermostatic valve trim with integrated volume control Upper handle controls on off and water volume Lower handle controls temperature GROHE TurboStat compact cartridge maintains consistent water