THE CLASSIC IN MODERN BATHROOM INSTALLATIONS Geberit concealed cisterns are the classics of modern bathroom installations and have been installed a million times over around the world for more than 50 years. They are known for their proverbial reliability. Every cistern is leak-tested before it is delivered. The 50-year guaranteed spare parts availability provides long-term security on all replaceable mechanical parts of the concealed cistern and actuator plate. Excluded are the specific functionalities of electronic products (e.g. Hygiene Flush or DuoFresh). The flush volume of the Geberit Sigma concealed cistern 12 cm can be limited to 4.5 litres. It’s therefore exemplary in terms of water consumption and has achieved consistently high scores on the Water Efficiency Label.