Concept System® 77 is a thermally insulated window system that meets the highest standards for insulation, stability and security. In accordance with thermal requirements, the heat transfer coefficient (Uf) for this system is 1.6 W/m²K, for standard opening windows. Thanks to its unique design, the system is even perfectly suited to triple glazing. What's more, CS 77 is a design solution that meets Swiss Minergie® standards.

The system's properties regarding soundproofing, waterproofing, airtightness, as well as bullet and fire resistance, meet even the most stringent European standards. What's more, CS77 windows are available in various burglary classes (2 or 3) to provide the maximum degree of security.
In order to fit perfectly into any type of building, the system is available in different aesthetic variants: Functional, Renaissance and Hidden Vent.

CS 77 system provides comprehensive solutions for all types of windows, both inward and outward opening. The possibility of creating various combinations, also using CS 77 doors and CP 130 sliding systems, as well as Ventalis solutions, means that the CS 77 system can be successfully used in all types of construction, even if the highest safety standards need to be met.