CS 77 Hidden Vent

CS 77 Hidden Vent

Concept System 77-Hidden Vent raam

Concept System® 77 is a high insulating window system that meets elevated requirements regarding thermal insulation, stability and security. Anticipating on the thermal requirements, the insulation value (Uf) for the HI+ variant of this system goes down to 1.7 W/m²K for a standard opening window. The unique concept of the system makes it perfectly suitable for triple glazing and CS 77 even achieved the Swiss Minergie® component label.

The system’s performance regarding acoustics, water- and air tightness, but also for specific applications like Bullet - and Fire Resistance, meets the most severe European standards. Moreover, CS 77 windows are available in different burglar resistance levels (class 2 & 3) making it an extremely secure system.

To match the different building types, the system is available in a variety of aesthetic styles: Functional, Renaissance and Hidden Vent.

The CS 77 system includes the most complete range of solutions for all types of inward and outward opening windows. Ultimate combination possibilities, also with CS 77 doors, CP 130 sliding systems and Ventalis ventilation units, makes CS 77 extremely suitable for all types of building concepts, even with the highest safety requirements.


Technische informatie


Min. aanzichtbreedte kader: naar binnen opengaand76 mm 
Min. aanzichtbreedte kader-vleugel: binnenopengaand76 mm 
Min. aanzichtbreedte T-profiel101 mm 
Max. hoogte vleugel2400 mm 
Max. breedte vleugel800 mm 
Max. gewicht element120 kg 
Totale systeemdiepte kader68 mm 
Totale systeemdiepte vleugel72.5 mm 
Opdekhoogte18.5 mm 
Min. glasdikte 4 mm 
Max. glasdikte 48 mm 
Min. glasdikte vleugel21 mm 
Max. glasdikte vleugel48 mm 


Luchtdichtheid max. testdruk4 (600 Pa)
WaterdichtheidE750 (750 Pa)
WindbelastingsweerstandC4 (1600 Pa)
Thermische isolatie (Uf)2.2 W/m²K


  • Fixed windowFixed window
  • 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