Easy installation: Basic set uBox universal for all hansgrohe shower drain barriers (seal water height 30 mm) The hansgrohe uBox universal basic set for flat installation is your practical mounting 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 attached to a large-surface platform consisting of 3 noise-reducing foam panels. These create the best possible conditions for stable positioning and simple height and angle adjustment. Flexibility and safety during installation. Another plus: the uBox universal has a factory-preassembled sealing fleece and no less than 3 access points for maximum connection options on the drainage pipe (horizontal, DN40).