GROHE Grohtherm Smart Control Single Function Thermostatic Trim with Control Module in Hard Graphite (Valve Not Included) 29136A00 - The Home Depot
Thermostatic Bath Mixer - Grohtherm 800 from Grohe
Themostatic Bath/Shower Valve
Shower Set. 1.75gpm
Grohe 24107000 Starlight Chrome Grohtherm Single Function Thermostatic Valve Trim Only with Double Knob Handles and Volume Control - Less Rough In - FaucetDirect.com