Wall frame for concealed WC GEBERIT DuofixBasic Delta flush 12 cm height 112 cm (111.153.00.3)

GEBERIT DuofixBasic wall frame for concealed WC with a 112 cm frame height and 12 cm Delta flush depth is an installation system designed for wall-hung toilets. The frame integrates the cistern and flush mechanism and is built for fixed mounting behind drywall or masonry finishes. It provides the structural support needed for suspended ceramic bowls while allowing a space-saving, concealed cistern layout suitable for bathrooms in residential and commercial environments.

Advantages

The DuofixBasic frame offers a compact installation profile with a low built-in flush depth that helps save space behind the wall. Constructed for secure load-bearing support, it accommodates wall-hung toilets and conceals the cistern and plumbing for a clean visible result. The system is compatible with standard flush plates and provides access for maintenance without removing the wall finish where access panels or flush plates are installed. Its design supports installation into both stud-wall (drywall) and solid-wall constructions.

Suitable for

• Residential bathrooms where a concealed cistern and wall-hung toilet are desired
• Commercial washrooms requiring robust, load-bearing in-wall installations
• Renovation projects where shallow installation depth is needed behind finishing materials
• New construction with drywall or masonry walls that will be finished over the frame

Key specifications

• Frame height: 112 cm
• Flush depth (installation profile): 12 cm (Delta)
• Intended use: support for wall-hung toilet with integrated concealed cistern
• Suitable wall types: drywall (stud) and masonry
• Access for maintenance via compatible flush plate opening
• Load-bearing design suitable for suspended ceramic bowls

How to use

Install the frame at the required mounting location according to the structural requirements, ensuring the frame is securely fixed to floor and wall anchors. Connect the water supply and drain to the integrated cistern and outlet according to local plumbing codes. Mount the finishing wall (drywall or masonry cover) over the frame, cut openings for the flush plate and toilet outlet, and fit a compatible flush plate. Attach the wall-hung toilet bowl to the frame mounting bolts and perform final alignment and sealing. Complete installation with water supply connection and functional test of the flushing mechanism.

Usage recommendations

Use appropriate fixings and follow manufacturer installation instructions and local building codes. Choose a compatible flush plate and wall-hung bowl specified for in-wall systems. Ensure access to the flush plate for future maintenance and test the installation for leaks and correct operation before closing the wall fully.