Geberit Sigma Dual Flush Concealed Cistern – 635mm High

The Geberit Sigma Concealed Cistern is a high-quality dual flush solution designed for modern bathroom installations. Featuring a durable rectangular design, this floor-mounted concealed cistern measures 635mm in height, 570mm in width, and 160mm in depth, providing dependable performance while remaining hidden behind the wall. Backed by a 1-year guarantee, it is specifically designed for use with Sigma flush plates, delivering a neat and streamlined appearance in contemporary bathroom spaces.

This concealed cistern features a dual flush push button system with selectable flush volumes of 3L/6L or 3L/4.5L, helping to reduce water consumption without compromising flushing performance. It supports both mechanical actuation rods and pneumatic air/cable flush operation, offering excellent installation flexibility. Front actuation ensures convenient operation and compatibility with both dual flush pneumatic and mechanical buttons.

Designed for drywall construction, the cistern is suitable for concealed installation within part-height or room-height prewall installations. It is intended for use with back-to-wall, floor-standing toilets and is fully insulated against condensation while also being protected against dirt, helping to ensure reliable long-term performance and improved durability in demanding bathroom environments.

The installation height is 1080mm and can be cut down depending on the WC pan performance, with a minimum installation height of 950mm for greater flexibility. The flush bend offers a maximum adjustment of 80mm, while the flush pipe can also be shortened by up to 80mm to simplify installation. Designed for easy fitting, it provides a practical solution for both residential and commercial bathroom projects.

The Geberit Sigma Concealed Cistern combines advanced engineering with dependable everyday performance. Featuring dual flush operation, 3L/6L and 3L/4.5L flush volumes, mechanical and pneumatic flush compatibility, front actuation, condensation insulation, dirt protection, adjustable installation height, adjustable flush bend, compatibility with Sigma flush plates, and easy installation, it delivers reliable concealed flushing performance. Images are shown for illustration purposes only.