Archello Awards 2026 · Enter your projects before 30 September 2026
Archello Awards 2026 · Enter your projects before 30 September 2026
  • When triple glazed can comply to the latest Building Regulations
  • Security tested to European Standards RC2 and RC3
  • Slim sight lines
  • Various glazing options including double and triple insulated glass units
  • Fire resistance also available for sliding doors and fixed windows (not openable)

Jansen is one of the leading producers of cold formed, thermally broken steel profile systems for windows and doors. Headquartered in Switzerland, the company is well known for the quality, durability and performance of its products.

At Clement, we manufacture slender Jansen steel profile windows which meet the highest requirements of thermal insulation, security and fire protection, as well as mechanical strength and longevity. Suitable for restoration work as well as new build projects, these slim frames can be fitted into all opening types.

Clement offer the following Jansen window systems:

Janisol doors and window
Janisol Art 2.0 doors and windows
Janisol 2 EI 30 fire rated doors and windows. Windows fixed glazed only
Janisol C4 EI 60 fire rated doors and windows. Windows fixed glazed only
Jansen Economy 50 and 60 doors and windows
Janisol HI doors and windows
Janisol Arte 66 windows