KER3MR is one of the pioneering companies in Poland, specializing in the implementation of large-scale glazing based on minimalist sliding systems. For over 20 years, their custom-designed solutions and focus on meeting the real needs of customers have positioned KER3MR at the forefront of modern exterior glazing specialists.

KER3MR is a family-owned business that has been operating in the market for over two decades. From the beginning, their primary goal has been to tailor offerings to the actual expectations of their clients. Inspired by modern Western European architecture, KER3MR directed its efforts towards the private sector, offering a "tailor-made" approach—exterior glazing designed to match the lifestyle, aesthetics, and daily functionality of modern homes and residences.

Their motto is: "People come first." This guiding principle is at the core of KER3MR's daily operations. They place great emphasis on professional customer service, which is essential when working with discerning premium clients. Equally important is their comprehensive technical support for architects and designers. The KER3MR team comprises highly qualified managers and engineers whose skills and experience allow them to tackle virtually any market challenge.

KER3MR has been collaborating with Keller minimal windows® for many years, sharing common values: the highest quality and a personalized approach to each project. With Keller minimal windows® systems, KER3MR can execute even the most demanding orders.