Doors and windows


For passive construction, the Passive House Institute in Darmstadt certified a system with a structural depth of 95 mm, which is the flagship among door-window systems. An alternative to construction without the requirement for achieving passive standards is a system with a structural depth of 77 mm.

  • Passive windows with thermal insulation Uw of 0.6 W/m2K
  • Passive doors with thermal insulation Ud of 0.74 W/m2K
  • Doors with a width up to 1.4 m and height up to 3 m
  • Burglary-proof RC1, RC2, RC3


A flat surface without a visible leaf frame working cleanly and elegantly. The possibility of inserting insulating glass and decorative components creates a space for combination and creativity. Door panels are the perfect solution for family homes. Available in the structural depths of 77 and 95 mm.

  • In the passive design thermal insulation Ud of 0.44 W/m2K
  • Wide range of designs and colors for panels
  • Doors with a width up to 1.4 m and height up to 2.6 m
  • Burglary proof up to RC2


Modern systems make it possible to achieve very good thermal and technical properties at a structural depth of the frame of 70 mm. For structures where there are no higher demands on insulation properties, a system with a structural depth of 60 mm is often used.

  • Systems with high variability
  • Design options for industrial and historic buildings
  • Possibility of designing windows with hidden sashes
  • Windows designed for security up to RC4


For structures without a thermal insulation requirement, there are systems available with no thermal break and a construction depth of 45 mm. Ideal solutions for various types of interior walls, doors and windows.

  • Bends are possible in the profiles of frames, leafs and walls
  • Doors with a width up to 1.25 m and height up to 2.4 m
  • Compatibility with other systems
  • Acoustic insulation up to 45 db