The MB-104 Passive thermal barrier window and door system, with the highest thermal insulation, meets all the requirements for elements used in passive construction.
The system is used to create architectural exterior elements, such as various types of windows, doors, vestibules, showcases and spatial structures, which, in addition to excellent thermal insulation, are also characterised by very good sound insulation, water and air tightness and high structural strength.

The construction of MB-104 Passive system sections has two variants depending on the requirements of thermal energy saving: SI and AERO.​​​​​​​ The parameters of windows and doors made of MB-104 Passive system elements exceed the current requirements of the most stringent regulations and standards in force, which is why the MB-104 Passive system is a system dedicated to energy-efficient and passive construction.​​​​​​​

Advantages of the MB-104 Passive system:

• windows with Passive House Institute Darmstadt certification for MB-104 Passive SI and MB-104 Passive Aero versions.
• doors with Passive House Institute Darmstadt certification for MB-104 Passive SI+ version
• high thermal insulation for UW openable window from 0.53 W/(m2K) and for UD doors from 0.62 W/(m2K)
• superior airtightness and insulation performance
• wide glazing range up to 81 mm
• exterior doors available in both glazed and panelled versions - ideal as a front door for the modern home
• based on the MB-104 Passive system, it is also possible to manufacture panel doors that offer rich aesthetic possibilities and are able to meet the expectations of the most demanding users.