This post was created in partnership with Geberit as part of a sponsored collaboration.
When you’re renovating in a New York brownstone, every inch counts. Bathrooms, especially in older homes, tend to be compact, irregular, and full of quirks. So when we’re designing these spaces, we’re always looking for solutions that maximize function without sacrificing design. That’s why we’ve become big fans of Geberit’s in-wall systems and actuator plates.

A Smarter, Sleeker Solution
Geberit pioneered the in-wall cistern more than 60 years ago, and their innovation has become the industry standard for modern bathroom design. Instead of a bulky tank sitting behind the toilet bowl, the Geberit Duofix system integrates everything inside the wall. The concealed steel-frame carrier supports the wall-hung toilet bowl and houses the tank, which is pressure-tested before it ever leaves the factory.
This not only creates a cleaner visual line, it fundamentally changes how the space feels and functions. With the tank hidden, you free up floor area, increase the perception of space, and can even adjust the mounting height of the toilet bowl to suit accessibility needs or design preference.
Installation That Makes Sense
From a plumbing perspective, the Duofix in-wall carrier is engineered to simplify installation. It’s compatible with both 2×4 and 2×6 stud walls, making it a fit for most renovations or new builds.
The carrier bolts directly into the framing, distributing weight through the steel frame rather than relying on the wall finish itself. Once installed, the frame can support up to 880 pounds, which gives both contractors and homeowners peace of mind.
The system connects to standard waste and water lines, and the concealed tank is designed with dual-flush technology, 1.6/0.8 or 1.28/0.8 gallons per flush, meeting both U.S. and Canadian plumbing codes while dramatically reducing water consumption. Because all mechanical components are accessible through the flush plate opening, maintenance and future servicing can be done without opening the wall.

Why We Like the Actuator Plates
Once the in-wall system is installed, the actuator plate becomes the only visible element. It’s a small but crucial detail, and one that can completely change the aesthetic of a bathroom. Geberit’s Sigma40 actuator plate is the thinnest in their lineup at just 3/16 of an inch deep. Available with round or square buttons, in a wide variety of finishes in both glass or metal. The plates feature fingerprint-resistant coatings and a refined dual-flush mechanism that feels solid and responsive.
The flush plate doesn’t just look good, it also provides easy access to the system’s internal components. Beneath it, you’ll find the service panel that allows plumbers (or experienced DIYers) to adjust or replace parts like the fill and flush valves. These valves are engineered without the traditional chains and flappers that often corrode or fail over time, ensuring smooth, long-term operation.
Performance Meets Design
One of the reasons we keep specifying Geberit products is that they bridge the gap between engineering precision and design flexibility. The in-wall system pairs with wall-hung bowls from nearly every major ceramic manufacturer, so we can choose a fixture that fits the style of the project, whether it’s classic, mid century, or ultra modern. And because we use Geberit Duofix systems and actuator plates in 90% of our projects, we can rely on consistent performance along with the design freedom we need.
And for anyone renovating an older home, an in-wall system can actually simplify layout challenges. By moving the tank inside the wall, you can reclaim precious inches of depth and make tight spaces feel noticeably larger. Add the visual lightness of a floating bowl, and the entire room feels elevated.

Why We’ll Keep Using Them
Every renovation we do has to balance history with modern living. Geberit’s in-wall systems check all our boxes: clean design, reliable performance, sustainable water use, and easy maintenance. Behind the wall, it’s all precision engineering. In front of it, it’s pure design freedom.
If you’re planning your own bathroom renovation, especially in a smaller or historic home, consider going in-wall. It’s one of those upgrades that you’ll appreciate every single day.




































































