The innovative aluminium coupled sash provides perfect multiple protection in a single step. The Kömmerling 76 centre-seal AddOn PVC window system does not convince by its modern design alone.

Thanks to the additional glass and the integrated Venetian blind inside that glass, additional protection is provided. The Venetian blind between two glasses, which protects from the view and from the sun's rays, remains untouched by the weather and provides a pleasant feeling of being in the room. Venetian blinds can be operated manually or electrically.
An additional advantage that you get with glass on the midfield wing is the improved values of sound and heat protection. Heating costs and CO emissions are significantly reduced2, and the quality of your life increases.
The Kömmerling 76 centre-seal AddOn PVC window system is best suited to renovation and refurbishment. The additional aluminium coupled sash can be fitted to almost any sash with an AluClip aluminium cover. By choosing this system you will upgrade your existing windows while sparing yourself the dirt and construction noise that come with replacing joinery.
On the inside of the window, the PVC profile ensures a high safety function and easy maintenance. You can process and paint the aluminum cladding in an almost infinite choice of colors, with various processes of finishing techniques.
Our greenline principle: energy-efficient window systems, stabilizers in fresh material without the participation of lead and an intelligent recycling concept, provide an additional plus for the longevity of the profile.