Bertrand Windows and Doors


The TREND system is 74 mm deep and has 5/6 chambers and 2 seals. It is possible to use visible or hidden hinges.


0.8 W/(m²K)

Number of seal levels


Number of chambers in the frame


  1. System depth 74 mm
  2. 5/6 chamber system
  3. 2 seal lines
  4. Modern design: available in a version with a straight and rounded door leaf
  5. Advanced technological solutions
  6. Available in various colors, also in acrylcolor technology
The external side can be finished with the proven acrylcolor technology.
Easy to use
Trend windows are easy to care for, operate and maintain
The windows are resistant to weather conditions

Technical cross-sections of the Trend system

View from the inside - window open
View from the inside - window open
View from the inside - window closed

Product TREND comes in the following versions

ask about the product

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