Windows from Keller minimal windows® – for a lifetime

The customers of Keller minimal windows® expect their purchased home conservatories and window systems to function just as well and provide the same pleasure even after many years. To meet this objective we select only materials and components which correspond to high quality standards and which are long-lasting. In our factory at Troisvierges in Luxembourg we pay attention to the smallest details and perfect finish. We use only high-quality aluminium and high-strength materials to ensure that you remain happy with our products for many years. As well as our modern machine park, the knowledge and experience of our employees as well as of our partners is essential. Many processes are still performed by hand in order to ensure the high quality standards.

Made in Luxembourg

Keller minimal windows® has been manufacturing in the north of Luxembourg since 1990 and in 1994 we were awarded the “Made in Luxembourg” label. All phases of work, from development, planning and manufacturing are performed in-house. The assembly is carried out by our qualified partners.

What started as a small operation is now a globally-operating company with more than 30 business partners. One thing has stayed however unchanged – the quest for absolute perfection and top quality. And it is our customers, their wishes and needs, who are at the centre of everything we do.



Absolute top quality

Our customers want a product of exclusive quality. Every construction is made-to-measure with high quality aluminium profiles which are processed with the utmost precision.  We add our extensive expertise which is based on 30 years of experience. Thus with every product from Keller minimal windows® you get the best quality, the longest service life and the best service. Every Keller minimal windows® design is an investment for life.



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