Highly energy efficient

Concept System® 86-HI is a highly insulated system for inward opening windows, which meets the highest requirements concerning safety and stability. The system’s unique insulation concept not only ensures the extreme stability and elevated water- and air tightness, but also makes it perfectly suitable for triple glass applications.
The overall insulation value (Uf) of the system's HI variant goes down to 1.7 W/m²K. CS 86 even achieved the Swiss Minergie® and Minergie-P® component label. 

Ultimate combination possibilities, also with CS 86 doors, CP 155 sliding system and CF 77 Folding doors, makes CS 86 extremely suitable for all types of building concepts.


Technical information


Min. Visible width frame: inward opening70 mm 
Min. Visible width vent: inward opening0 mm 
Min. Visible width frame-vent: inward opening70 mm 
Min. Visible width frame: outward opening- mm 
Min. Visible width vent: outward opening- mm 
Min. Visible width frame-vent: outward opening- mm 
Min. Visible width T-profile95 mm 
Max. height vent2400 mm 
Max. width vent1400 mm 
Max. weight vent (element)120 kg 
Overall system depth frame77 mm 
Overall system depth vent78,6 mm 
Rebate height17 mm 
Min. Glass thickness28 mm 
Max. Glass thickness44 mm 
Min. Glass thickness vent28 mm 
Max. Glass thickness vent44 mm 


Air tightness max. test pressure4 (600 Pa)
Water tightness9A (600 Pa)
Wind load resistanceC4 (1600 Pa)
Acoustic performance44 (0;-2) dB
Thermal insulation (Uf)1,7 W/m²K

Opening elements

  • FixedFixed
  • Inward opening combined elementsInward opening combined elements
  • Inward opening double casementInward opening double casement
  • Inward opening tiltInward opening tilt
  • Inward opening tilt turnInward opening tilt turn
  • Inward opening turnInward opening turn
  • Inward opening turn tiltInward opening turn tilt

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