The Geberit concealed frame is a metal frame with a built-in concealed cistern, which is mounted inside light walls or leaned against them and then covered with tiles. In this way, it becomes invisible, while at the same time enabling the safe and durable installation of bathroom fittings. This is a very practical and aesthetic solution, which is why it is very popular. But how do you choose the best model? We advise you.
Which concealed frame model should I choose?
Choosing the right flush-mounted frame depends on several important aspects:
- The most important question to ask yourself when buying a concealed frame is the type of installation. Models for heavy installation require cutting a recess in the wall and, after installation, bricking up the frame inside. In light installation, however, it is enough to attach the frame to the wall and then cover it with tiles or panels.
- Next, you need to determine the dimensions of the entire structure, depending on the arrangement of the washbasin, toilet and other elements that will be mounted to the Geberit concealed frame.
- The capacity of the flush tank is another aspect worth considering. The amount of water flushed at one time depends on the shape of the toilet bowl. However, it is worth buying a model that provides several flushing modes depending on your needs. This way, you can save a lot on water consumption.
- The material from which the entire structure is made determines its durability and failure-free operation. It is worth investing in high-quality construction of under-wall frames, which will serve for many decades without any problems.
- Manufacturer warranty - you should pay attention not only to its length, but also to the scope it covers.
- Availability of spare parts – in addition to the guarantee, the length of availability of spare parts will guarantee us the peaceful use of the bathroom without the need for renovation for many years. Geberit frames have up to 50 years of availability for spare parts.
By following these simple tips, you can choose a durable and strong model that will work perfectly in your home.
Check out Geberit products at the Onninen wholesaler
TOP 5 best concealed frames
Below we present a list of the five most interesting models of concealed frames. Each of them is characterized by certain special features, thanks to which it can become very useful and practical. We leave the choice of the best model to you - which one fits best in your bathroom?
Geberit Duofix Sigma concealed frame
The basic model of the concealed frame available on our website. Geberit Duofix Sigma is characterized by high stability, thanks to which it will lift a wall-hung bowl up to 62 cm long. Another advantage is the tool-free installation, limitation of splashing from a rimless bowl by easy adjustment on the valve and easy setting of flushing with one or two volumes, with 
additional support for stopping the water flow using a flush button intended for this purpose.
Geberit Duofix Basic Delta concealed frame - economic model
The Geberit Duofix Basic Delta lightweight concealed frame is also suitable for the installation of wall-hung toilet bowls up to 62 cm long. This model has two flushing modes, both of which can be set according to your own preferences. Additionally, it also supports the "stop" function for immediate interruption of flushing. This is an excellent combination of quality and attractive price.
Geberit Duofix Sigma 8 concealed frame - model for narrow installation
Geberit Duofix Sigma in the version for narrow installation it is characterized by the same great stability as the basic model. It allows flushing with one or two volumes of water - with the possibility of precise setting of the amount of flushed water. It will work perfectly in small bathrooms.
Geberit Duofix Omega concealed frame - low-rise model
The Omega model has a cistern covered with an anti-fog layer that handles two flush volumes. It is a lightweight installation system, for installation in alcoves, under a window or in free-standing walls. The Geberit Duofix Omega for low installation will work well in any bathroom, also in the case of slopes, due to the significantly lower height of the structure.
Geberit Duofix concealed frame for the disabled
Although it is narrower than other models, Geberit Duofix for disabled people allows for the installation of bowls up to 70 cm long. The dry-wall mounting frame, adapted for bathrooms with equipment for the disabled, ensures greater stability of use.
A built-in frame tailored to your needs
To sum up our list of the best concealed frames, it is worth using the table below.
| Geberit Duofix Sigma | Geberit Duofix Basic Delta | Geberit Duofix Sigma8 | Geberit Duofix Omega | Geberit Duofix for the disabled | |
| Max. flushing water quantity [l] | 7.5 | 7.5 | 7.5 | 7.5 | 7.5 |
| Min. flushing water quantity [l] | 2 | 2 | 2 | 2 | 2 |
| Width [mm] | 500 | 500 | 500 | 500 | 425 |
| Height [mm] | 1120 | 1120 | 1140 | 820 | 1120 |
| Water connection in inches | 1/2 | 1/2 | 1/2 | 1/2 | 1/2 |
| Diameter of drain pipe [mm] | 90 | 90 | 90 | 90 | 90 |
We have written down the basic parameters of each of the previously mentioned models. All of them fit the classic 1/2 inch water source connection. At the same time, the drain pipe was made in the standard 90 mm diameter. Thanks to this, Geberit can be installed not only in newly built houses, but also as part of a general bathroom renovation. Each model has its additional advantages - reduced flow rate, adjustable dimensions or the ability to hold a larger bowl. We also have something for the disabled among our proposals, whose needs are slightly different - they need additional handles attached to the concealed frame. Which model is the best? It depends on your needs.