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Simply beautiful windows

Less is more

New simplicity in design

The GEALAN-KUBUS® system defines a new design idiom for vinyl windows in architecture. It offers large expanses of glass for more light and transparency, and greater design freedom. On the inside, the new system boasts a flush sightline with no distracting joins. On the outside, its rectangular upstand emphasises the harmonious overall impression.

Square and almost invisible

The system dimension for both the frame/sash combination and the mullion is 100 mm. This means that the mullion and lateral frame parts have the same visible width, resulting in symmetry and an aesthetic appeal.

100 mm – the measure of all things

"Perfection is not attained when you have nothing more to add but rather when there is nothing left to take away."

Antoine de Saint-Exupéry

  • No glazing bead
  • Installation depth and visible width of 100 mm for the frame/sash package and the mullion
  • Flush interior view
  • Clean contours

The KISS principle: keep it small and simple

1. Rectangular appearance all round – both inside and outside.
2. Sash invisible from the outside.


3. Seamless sash design with no glazing beads and flush sightline thanks to 4. optimal clip profile


5. Unique surface quality thanks to exclusive acrylcolor technology on the outside.


6. Innovative STV® bonding technology for a "borderless" sash design guarantees maximum stability.


7. Outstanding heat insulation thanks to foam-filled profile chambers.


The perfect window design

Reveal variants



Maximum design freedom! The design-oriented GEALAN-KUBUS® window system opens up a range of design possibilities and therefore new perspectives for architects. Whether fully exposed, half concealed or almost invisible, GEALAN-KUBUS® frames are guaranteed to make an impression.

Easy-to-clean frame geometry

The GEALAN-KUBUS® system is also impressive from a functional point of view, above all with respect to the ease of cleaning. In the profile geometry, particular attention was paid to smooth contours in the frame. The frame stop has no gasket, while a curved central domed gasket is integrated into the frame.

Colouring in the GEALAN-KUBUS® system

The acrylcolor colour palette

acrylcolor standard colours GEALAN-KUBUS®

  • RAL 7015: Slate Grey
  • RAL 7016: Anthracite Grey
  • RAL 7040: Window Grey
  • RAL 8014: Sepia Brown
  • White Aluminium similar to RAL 9006*
  • Silver similar to RAL 9007*
  • RAL 9005: Deep Black
  • RAL 7039: Quartz Grey
  • RAL 9010: Pure White
  • DB703*

Opening schemes

Compatible with...

S 9000 lift-slide door, S 9000 system design and front door

GEALAN-KUBUS® can be combined with the S 9000 system and is suitable for window and French window solutions.


Downloads for GEALAN-KUBUS®


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