Grohe 29136GN0 Brushed Cool Sunrise Grohtherm Single Function Thermostatic Valve Trim Only with Double Knob Handles and Volume Control - Less Rough In - Faucet.com
GROHE Grohtherm Brushed Cool Sunrise 1.68-in Bathtub/Shower Thermostatic Trim (6.25-in-ID) in the Bathroom & Shower Faucet Accessories department at Lowes.com
GROHE 27032001 Rain Shower 210 Shower System Thermostat - Walmart.com
Thermostatic Shower and Bath Faucets
GROHE Grohtherm® SmartControl Single Function Thermostatic Trim with Control Module | Wayfair