In modern architecture, doors play a much different role than they once did. They’re now responsible for much more than functionality, and must play a part in shaping aesthetics, enhancing natural light and improving performance.
BDC Aluminium’s Alitherm 400 door system covers all these bases impressively and has seen it become one of the most popular choices among architects. Its combination of robust engineering, sleek design and seamless compatibility with contemporary structures makes it the perfect solution for modern projects and refurbishments.
Slim Profiles & Modern Aesthetics
The Alitherm 400 Door is defined by its sleek aesthetics. It features slim sightlines to provide a modern look, ideal for contemporary architecture. The door’s clean, minimalist frames allow architects to maximise glazed areas and increase the stream of natural light welcomed inside the property.
Our slim yet secure profiles deliver a striking entrance solution with no compromise on performance or functionality. Engineered for impressive durability and robustness, they allow larger glazed panels owing to the strength of the aluminium, which allows for modern looks to be achieved.

Versatility in Design
We’ve found that what really pleases architects about the Alitherm 400 Door is its design flexibility. They can be customised to suit a variety of performance and visual requirements.
Our system can accommodate both single and double doors, depending on your requirements. They come available with a broad choice of hardware options, designed to create visual consistency across varying elements of your projects.
We offer an extensive range of colour options, giving architects exceptional aesthetic flexibility. The system also supports dual-colour finishing, allowing each side of the door to be coated in a different shade for seamless integration with both interior and exterior design.
Our Alitherm 400 doors are also compatible with our Alitherm 400 windows, enabling the creation of a cohesive façade.
Integration with Open-Plan and Multi-Use Spaces
With modern buildings increasingly preferring more flexible, open environments, architects need door systems to support the shift. Alitherm 400 Doors integrate smoothly into countless different environments.
They work perfectly in modern offices, helping to define breakout rooms or meeting areas, while maintaining openness through more expansive glazing. In retail developments, they create inviting access points that aid in enhanced visibility and customer flow.

Alitherm 400: Contemporary Solutions
Architects are increasingly relying on the Alitherm 400 door to solve their contemporary door needs, and it’s clear to see why. The striking combination of slim sightlines, design flexibility, and robust security makes the perfect modern door, and is capable of seamlessly integrating into any modern build. If you’re interested in our Alitherm 400 Doors and would like to work with us at BDC, apply for a trade account today!