
Obumat, our round windows
Porthole windows traditionally evoke images of ships sailing endless seas, but when we think of inland architecture, they also add enormous elegance to constructions.
That is why, although their history is fascinating, their increasingly diverse and frequent application in modern architecture is equally so.
Porthole windows have evolved from being merely a functional element in naval design to becoming a symbol of unique architectural design.
That is why at Mabelux we decided to launch Obumat in 2023, raising the standards of quality and design in round windows.
Porthole windows, from the sea to architecture
The concept of porthole windows, as mentioned, makes us think of ships. But have you ever wondered what the benefit is of having them round?
It is because the circular shape distributes structural stresses more evenly, making them more resistant to water pressure and vibrations. Their design not only provided greater durability but also better watertightness—crucial for keeping cabins dry on long voyages and, above all, for keeping vessels afloat.
Yet, if we look at some classic architectural buildings, we will notice that porthole windows appear in many places, such as the iconic oculus of the Pantheon in Rome.
French architecture also popularized these round windows in the roofs and attics of their buildings—not only for aesthetics but also to allow natural light to enter.
Throughout the 19th and 20th centuries, porthole windows became a recurring feature in architecture, adding personality and functionality to structures.
Today, these windows combine tradition and modernity, standing out in residential, commercial, and even industrial projects.

Minimalist designs and ultra-thin profiles
Although originally created for purely functional purposes, round windows have earned a special place in contemporary architecture thanks to the multiple benefits they offer for your constructions.
Breaks the monotony of straight lines
Accustomed as we are to thinking in angles and square shapes, circular windows add dynamism and creativity to any design. For example, they can soften rigid façades, providing a more organic and fluid aesthetic.
Frames a landscape like a work of art
Are you envisioning a building with views of the sea or a forest? Porthole windows like Obumat function as a natural frame, turning the exterior landscape into a piece of art inside any home or office.
More efficient ventilation
With modern opening systems, such as the pivoting or tilt-opening mechanisms of Obumat, porthole windows not only allow natural light to enter but also provide controlled, much more efficient ventilation.
Timeless aesthetics in windows
Round windows evoke the nostalgia of ship cabins, adding a vintage or nautical touch that is ideal for bathrooms, kitchens, or homes near the coast.
Connects spaces with porthole windows
In interior design, porthole windows also serve as a visual connection element between different areas, letting light pass through and enhancing the sense of space.

Obumat: innovation with a minimalist spirit
At Mabelux, we have been specialists in aluminum and steel bending for more than 35 years. In 2023, we took a step further by creating Obumat, our line of porthole windows. This project was born from a passion for innovation and the search for solutions that combine aesthetics, functionality, and sustainability.
What makes Obumat special
- Variety of openings: From fixed windows to pivoting, hinged, and tilt-opening systems, we adapt our solutions to each client’s specific needs, offering up to 23 different opening types.
- High-quality materials: We use first-rate aluminum, guaranteeing strength and durability even in the most demanding climates.
- Minimalist design: Obumat’s clean lines and impeccable finishes integrate perfectly into any architectural style—from the most classic to the most avant-garde.
Advantages of choosing Obumat
Whether you aim to add a touch of elegance to a construction, improve a space’s energy efficiency, or simply stand out in design, porthole windows are a versatile and unique option.
And with Obumat by Mabelux, you are guaranteed to work with experts who understand your needs and transform them into concrete solutions.
- Total customization: We design windows to perfectly fit your project.
- Energy efficiency: Our designs ensure optimal insulation, contributing to energy savings.
- Ease of installation: Thanks to our specialized team, we guarantee a fast and hassle-free process.
Porthole windows: more than a trend in architecture
Round windows are experiencing a renaissance thanks to the trend towards organic forms in architecture and design.
Some of the most interesting uses include:
- Coastal buildings: Projects where porthole windows are used to maximize the connection with the natural environment, such as beaches or cliffs.
- Coastal buildings: Projects where porthole windows are used to maximize the connection with the natural environment, such as beaches or cliffs.
Contemporary homes: From bathrooms with a nautical aesthetic to bright kitchens, porthole windows are a versatile and stylish element.

Mabelux: over 35 years shaping your ideas
At Mabelux, we are not just window manufacturers; we are solution creators. Since 1983, we have worked on projects in architecture, construction, and industry, specializing in the bending of aluminum and steel profiles. Our experience and technology allow us to reach where others cannot, offering personalized and technically advanced solutions.
Our line of porthole windows, Obumat, is the result of years of learning, innovation, and an unwavering commitment to quality.
For us, each window is much more than a product—it is a key piece in the design and functionality of a space. At Mabelux, we shape your idea, and if you’re considering including porthole windows in your next project, do not hesitate to contact us. We are here to help make your architectural dreams a reality.

