Modern aluminum system dedicated for energy saving & passive architecture.

The Alutrend Miratherm system features:


  • U Factor (summer) IP from: 0.1234 Btu/hft2F
  • U Factor (metric) IP from: 0,70 W/m2K
  • simple shape of aluminium overlays
  • depth of the system 46164in (metric – 126 mm)
  • wide range of wood species
  • 3 sealing layers
  • three glass pane glazing
  • additional thermal insulation material

The window system with thermal break MB-104 Passive, with the highest thermal insulation value, meets all the requirements for elements used in passive construction.


This system is used to make external architectural elements, for example: various types of windows, vestibules, showcases and spatial structures, which, besides excellent thermal insulation, also have very good sound insulation, water and air tightness and the durability of the structure.


The structure of the MB-104 Passive sections comes in two manufacture variants, depending on the requirements of the thermal energy savings: SI and AERO


Parameters of windows made with elements of the MB-104 Passive system exceed the requirements of the most stringent regulations and standards in force, which is why the MB-104 Passive system is a dedicated system for the energy-saving and passive construction.

Windows in the MB 104 system, versions SI and Aero: