Innovation + Craftsmanship in aluminum minimal windows® profiles since 1980s.
minimal windows® features, materials and details
The art of attention to details and materials, from the hidden filling parts to the final perfect appearance meeting any architectural exactingness. Designed and developed in the heart of the EU - in Luxembourg, Keller minimal windows® aluminum systems gained a great deal of international recognition over the years by launching ground-breaking quality products and executing exceptional projects across the globe. This journey could not have been made without our passionate, highly- qualified and dedicated team.