Geberit Duofix Concealed Cistern Frame UP720

The Geberit UP720 concealed cistern frame is Geberit's in-wall installation system for wall-hung toilets, designed for both renovation and new-build projects where a clean, flush wall finish is required with no visible cistern. The Duofix frame stands 114 cm tall, the integrated Sigma cistern is just 8 cm deep, making it suitable for relatively slim stud walls.

Specifications

Is This Product Right for Your Project?

The Geberit Duofix UP720 is ideal for installing a wall-hung toilet within a stud wall. The frame is height-adjustable, which is useful for aligning the toilet height with the user's requirements or the finished floor level. Because the cistern is only 8 cm deep, the overall wall build-up required is relatively modest — however, always allow for a minimum total wall depth of around 12–13 cm, including tiling and the supporting structure.

This system is not suitable for close-coupled toilets or toilets with a surface-mounted cistern. Always check the water pressure in your property: if the pressure falls below 0.1 bar or exceeds 10 bar, the cistern will not function correctly. The UP720 must always be paired with a Geberit Sigma flush plate — flush plates from other manufacturers are not compatible with this cistern.

Installation and Use

A common mistake when installing the Geberit UP720 is failing to ensure the frame is perfectly level and plumb before closing the stud wall. Always check with a spirit level in two directions, as an uneven frame will cause problems when fixing the toilet and connecting the flush pipe. Set the frame height before boarding the wall — once the wall is finished, adjustments cannot be made without removing the cladding.

Frequently Asked Questions

What is the difference between the Geberit UP720 and the UP320?

The UP720 features a Sigma cistern that is 8 cm deep, whereas the UP320 uses a 12 cm cistern. This makes the UP720 the better choice for slimmer stud walls. Both systems use Geberit Duofix frames and are compatible with Sigma flush plates, but the cistern inserts are not interchangeable between the two.

Which flush plate fits the Geberit UP720?

The UP720 is compatible with all flush plates from the Geberit Sigma range, including the Sigma20, Sigma30, and Sigma70. The choice of plate comes down to your preferred design and finish. Browse the full range in the flush plates collection.

Is the Geberit Duofix UP720 suitable for renovation projects?

Yes, the height-adjustable frame fits most standard stud wall constructions. When retrofitting, it is important to verify that the existing wall structure has sufficient load-bearing capacity and that the required connections (water supply and waste outlet) are correctly positioned. The frame itself does not include a dedicated renovation adapter; the existing structure must be able to support the weight of the toilet and normal usage loads.

Browse all options in the concealed cistern frames collection or pair the cistern frame with a wall-hung toilet from the wall-hung toilets collection.

Item number: 111.796.00.1
EAN: 4025416351788

The Netherlands & Belgium: Ordered before 6:00 pm, delivered tomorrow

Germany: 1-3 working days

Rest of Europe: 3-8 working days

See our shipping page for more information here.

We offer a return or exchange policy of 14 days if you are not satisfied with your order for whatever reason. For more information, see our return policy here.