Easy installation: Basic set uBox universal for vertical installation of hansgrohe shower troughs The hansgrohe uBox universal basic set for vertical installation is your practical installation system for all hansgrohe RainDrain shower drain barriers. The innovative uBox universal basic set, specially developed for hansgrohe drainage systems, is embedded in the screed and can be used for wall-mounted as well as free-standing installation. Another plus: the uBox universal has a sealing fleece that is pre-assembled at the factory. This makes installation easier and provides increased protection against water damage. The protective cap, which is also included, prevents dirt from entering during installation.