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Cross-section of a wall-mounted toilet showing the internal installation and mounting structure.

SupraFix 4.0

Reading Time: 4 minutes | Article from 20.4.2026

Fastening made better: Quicker, more precise, more secure

The SupraFix 4.0 invisible mounting system preserves the look of wall-hung WCs, keeping design clean and uninterrupted, while delivering installation that’s faster, more precise and more secure than ever before.

Designed for the demands of modern wall-hung toilets, it offers exceptional stability, precise alignment of toilet and seat, and an end look that’s completely free of visible fixings.

What is SupraFix 4.0?

SupraFix 4.0 is the latest generation of Villeroy & Boch’s invisible wall-hung WC mounting system, building on the speed and ease of installation of SupraFix 3.0. It securely fastens both WC and seat through the same mounting holes, keeping all fixings out of sight for a clean, visually uncluttered result.

Simply installed, securely fixed

Designed to simplify every step

One-person installation

SupraFix 4.0 makes it possible for wall-hung WCs to be installed easily by a single person - fast, simple and efficient.

Straightforward process

SupraFix 4.0 simplifies installation by combining WC and seat mounting through the same fixing points - no complex technical steps or special tools required.

Compatible

Designed to work seamlessly with all common prewall installation systems, SupraFix 4.0 supports flexible planning and effortless integration.

Even force distribution

The SupraFix 4.0 mounting system is designed to distribute load evenly across the entire rear wall of the toilet, enhancing long-term stability.

Discover all features

At a glance: the benefits of SupraFix 4.0

Welcome to a new generation of invisible WC fastening, re-engineered for greater precision and a noticeably simpler installation experience with the same visually flawless results.

A secure fit - guaranteed

SupraFix 4.0 ensures precise and stable fixing of the WC to the wall, compensates for minor structural irregularities and spreads force evenly across the entire rear wall of the toilet. The result is outstanding long-term stability and a comfortable, reassuringly solid feel in everyday use.

Intuitive top-down fitting

With SupraFix 4.0, the WC is mounted conveniently from above, allowing quick, controlled positioning. As soon as the fixing screws are inserted, the WC is held securely in place - giving installers immediate feedback that everything is safely fixed.

Designed for one-person installation

Carefully engineered for ease of installation, SupraFix 4.0 allows a single installer to work comfortably without awkward positioning or the need to temporarily hold components in place. The process is minimal, clear and intuitive.

Smart 2-in-1 fastening

Toilet and seat are installed in one operation via the same mounting holes, with no special tools required. By unifying these steps and reducing complexity, SupraFix 4.0 helps minimise alignment errors and supports accurate seat positioning throughout installation.

Two black wall brackets secure the back of a white toilet to the wall.

Close-up of a modern white bidet with a minimalist chrome tap and a control knob in front of a light grey wall.

A close-up of a toilet with the wall mounting being screwed into place.

Invisible fixing. Visible design quality

SupraFix 4.0 keeps all fixings completely out of sight, leaving WC surfaces calm and uncluttered with no visible screws or covers. It’s perfectly suited to modern, minimalist bathroom concepts, letting form and finish take centre stage while the technology works reliably in the background.

Discover more thoughtful details.

Close-up of a hand holding a bidet nozzle over a white bathroom fitting with two control elements against a blue background.

QuickRelease

Built-in QuickRelease technology makes it possible to remove your toilet seat in a few simple steps, allowing for fast, effective cleaning in hard-to-reach areas.

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Close-up of a hand with a gold ring touching the rim of a shiny white ceramic toilet.

CeramicPlus

Villeroy & Boch’s CeramicPlus surface finish makes bathroom ceramics highly water- and dirt-repellent. Surfaces stay cleaner for longer with noticeably less cleaning effort.

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TwistFlush

TwistFlush is the innovative Villeroy & Boch flushing system that rinses the entire inner bowl with the physical force of a water vortex. Say goodbye to repeated flushing and hello to a powerful, water-saving clean.

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