AppliaFit Universal Extension Kit Compatible with Grohe 14048000 for Select SmartControl Trims (1-Pack): Amazon.com: Tools & Home Improvement
Amazon.com: GROHE 26511000 Euphoria SmartControl Mono Shower System with Thermostat for Wall Mount, Starlight Chrome : Everything Else
GROHE SmartControl - Concealed Mixer for Shower or Bath (2 Valves, Square Shape, Set for Final Installation for GROHE Rapido SmartBox, Push for ON-OFF, Turn for Volume Adjustment), Chrome, 29148001