From the one man company to the largest international window brand in Europe! This long and successful development and Internorm's tradition and innovation makes the third generation - Anette Klinger, Christian Klinger and Stephan Kubinger really proud of.

The non-comparable locking mechanism I-tec Secure is standard in the UPVC or UPVC/aluminium window KF520 . Security class RC2N is standard (with lockable handle) - up to RC3 upon request.

In 1998, Internorm put the first aluminium entrance door with foam insulation core on the market. Next to four aluminium door systems, Internorm also offers two timber/aluminium door systems today. Our customers value the high-quality processing and individual design possibilities. In 2015 therefore, the 500,000th entrance door was produced.

Internorm develops the first three revolutionary I-tec innovations:

I-tec secure: unrivalled, fully integrated locking
I-tec shading: first photovoltaic blind in the window with integrated blinds

For the first time glass panes are glued to the sash at Internorm. This considerably improves stability, thermal insulation, sound reduction, burglary protection and functioning of the window for its entire lifetime.

Internorm develops a completely new type of timber/aluminium window system and meets customers' demands for maintenance-free "timber windows".

The second generation withdraws from the operative business to the supervisory board of directors and delegates one of their children respectively – Anette Klinger, Christian Klinger and Stephan Kubinger – to the management board.

Internorm develops the window with integrated blinds, a window with integrated sun and privacy protection between the panes.

Internorm is starting to export to Germany, Italy and Switzerland. In Turkey, shares in the company Campen A. S., Bursa are acquired.

The revolutionary system "Internorm3“ - 3 panes and 3 gaskets - is introduced to the market with great success.

Eduard Klinger sen. involves his three children Eleonore, Eduard and Helmut in the company with 25% stakes each.

In Traun in Upper Austria, a UPVC window factory is being built. This is also the birth of the Internorm brand. Internorm's first brand appearance occurs at the exhibition stand of E. KLINGER.

Eduard Klinger sen. lay the foundation for the company with the formation of the building and construction locksmith's in Linz/OÖ.