Manufacturer and installer

of steel doors and windows

NLFREN
Create your own design online
Create your own design online

Steel exterior joinery

It is impossible to imagine life without steel outside joinery. Steel combines beautifully with wood, concrete, masonry and has proven its added value both in terms of application and finesse. The complexity of steel exterior joinery cannot be compared with interior joinery, both in terms of engineering and production and installation. Our engineers with years of experience work out every project in Solidworks to leave nothing to chance.

Waterproof profiles

To guarantee perfect wind and water resistance, Feral Group works with Jansen profiles. This Swiss-made profile system is one of the best choices on the market today. Feral Group offers the choice between thermally interrupted ART15 and Economy 50 profiles and thermally interrupted Janisol & Janisol Arte profiles.