This shower extension set is compatible with Grohtherm SmartControl and SmartControl Mixer sets for final installation with up to three functions in combination with Rapido SmartBox and replaces for grohe 14048000 universal extension set To install this extension set let to control your shower or bath flexibly and cleverly Provides a 1-Inch extension between Rough-In and Trim, for 25mm Made of premium materials with durable and sturdy performance, great fitment for your shower control box with with 3 functions If you have any questions about shower extension set, please do not hesitate to send us a message and we will actively assist you in finding a solution Replacement for Grohe 14048000 Universal Extension Set, Fits for Grohtherm SmartControl Trims with Up to 3-Function, 25MM, 1-pack