Manufactured in Luxembourg, KELLER minimal windows® is renowned for its large-scale window and sliding door systems that are able to achieve heights of up to 4.5 metres. The system offers outstanding thermal and acoustic properties, delivering one of the most efficient standards thanks to its triple glazing potential. Designed with outstanding quality and modern profiles to allow for ultimate creative flexibility and optimized performance with ultra-seamless engineering. The revolutionary KELLER minimal windows® profile offered by Buildex, allows you to achieve a masterpiece which demands design recognition and exceeds the expectations of users. KELLER minimal windows® have perfected extraordinary composition and superior agility in an impressive and eye commanding system.