IFN is Europe´s leading provider of total solutions for windows. IFN consists of several companies, each with its own area of specialization. This close cooperation of specialists for windows, doors, facades and sun protection aims to provide innovative integrated solutions that are tailored to customer requirements.


Internorm, Schlotterer, GIG, Topic and Skaala are well known for their pioneering solutions. High investments in research and development, a high range of vertical manufacturing and years of experience form the basis to work on unique, innovative solutions for our customers.

IFN Windows Doors Sun & insect protection Facades