Zwero supply a suite of products from Maximal and Preconal.


We offer three products from Maximal; Maximal Futur, Maximal Original and Maximal Retro. All of these products are available in standard and compact versions.

Maximal windows and doors combine innovation, quality and design. Zwero are proud to offer this Scandanavian quality solution for your next construction or refurbishment project.


Preconal has created a strong image in the market with great competence, flexibility, rational manufacturing methods and efficient installation.

Preconal is now a company in the familiar Hansen Group, which is a family business in the third generation.

Hansen Group was established in 1909 in Lem, Denmark. Today, the Group employs approximately 780 employees. Hansen Group is Europe’s leading door, window and facade entrepreneur with companies in Norway, Denmark, the UK, Sweden, Poland, Iceland and Germany.

Discover more about our windows and doors