Geberit Concealed Cisterns

Duofix frames are steel support frames designed to sit inside a stud or false wall and are ideal if you want a wall-hung pan with a fully hidden cistern; many Duofix options come as complete 6/3L kits with Alpha01 flush plates. Alpha cisterns are the in-wall cistern units (also available with Alpha01 round or square plates) that sit behind furniture or a partition for a minimalist look. Monolith modules are finished, tall sanitary units in glass or stoneware that sit in front of the wall and give a designer look without building a stud wall, ideal when you want an exposed, elegant finish in white glass, black glass or a concrete look. If you can build a stud wall and want the most minimal look go Duofix; if you prefer a finished surface without construction, choose Monolith; Alpha cisterns suit simple in-wall concealment or furniture installations.

Shorter options such as 820mm suit compact cloakrooms or low-profile installations where you use a small wall-hung pan, while 980mm to 1090mm are common for standard wall-hung bowls in family bathrooms and give a little more room for plumbing and access. The taller 1120mm frames are useful if you want a higher pan position or are matching a half-height false wall. pick an 820mm Duofix for a tight cloakroom with a compact pan, but a 980–1090mm unit for a main bathroom with a standard-height wall-hung toilet.

Yes, there are cistern solutions for floor-standing pans; some products are described as "Floor Standing" compatible and Monolith sanitary modules include floor-standing versions (114cm and 101cm heights). If your pan sits on the floor, choose a floor-standing compatible unit or a Monolith sanitary module for floor-standing WCs, rather than a wall-hung Duofix frame. a Monolith module in white glass at 114cm pairs neatly with a traditional floor-standing WC while still hiding the cistern.

The Alpha01 round plate gives a softer, more traditional appearance, while the square Alpha01 offers a contemporary, geometric look, both are available with the 6/3L dual-flush operation. Functionally they perform the same dual-flush role, but visually choosing round or square helps tie the toilet area to other bathroom fittings, use a round plate to echo curved basins or a square plate to match linear furniture handles. Many Duofix and Alpha kits are supplied with your choice of Alpha01 plate so you can match the style at purchase.

A 6/3L dual-flush cistern offers two flush volumes, a larger 6-litre flush for solids and a smaller 3-litre flush for liquids, which reduces water use compared with older higher-volume systems. That size is common across the Geberit Duofix and Alpha cisterns included in our range and suits most homes aiming to save water without sacrificing performance. in a busy family bathroom the smaller flush for quick uses can cut your water consumption significantly over time.