MB-70 is a modern aluminium system intended for realizations of exterior architectural building elements requiring heat and sound insulation, such as: various types of windows, doors, vestibules, display windows or spatial structures. The system profiles have a three-chamber structure. The structural depth of the window sections is equal to 70 mm (frames) and 79 mm (casement), and for doors: 70 mm and 70 mm respectively. Such depths of casement and frame sections give the effect of one surface from the exterior side after closing – in the case of the window, and the facing effect to the surface of casement and frames – in the case of doors. Shape of the profiles allows achieving slender and resistant window and door structures.


  • a wide range of functions and ways of opening the windows and doors, adapted to user’s needs
  • diverse aesthetic options made available thanks to concealed sash windows; Industrial version with a steellike appearance as well as glazing beads in three versions: Standard, Prestige, Style
  • single or double leaf doors, opening inward or outward; large size constructions available as well 
  • possibility of bending the profiles and fabricating arch windows
  • can be easily integrated with façade appearance 
  • anti-burglary windows and doors
  • possibility of fabricating two-colour constructions: profiles can have different colours on the outside and the inside
  • compliance with CE marking requirements

The MB-70 system is characterized by a very low value of the overall heat-transfer coefficient Uf, thanks to application of the thermal breaks and gaskets. This is of a great significance in the times of increasing demands for the energy management and the environment protection. The value of heat transfer coefficient  for constructions of the MB-70 system – depending on the applied profiles and accessories – ranges between 1.5 and  2.39 W/m2K. In this system, the profiled “omega”-shaped thermal breaks are applied, of a width equal to 34 mm (windows) and 24 mm (doors), made from polyamide reinforced with fiberglass. The shape of thermal breaks increases the profile rigidity as compared to flat breaks and facilitates the section drainage, ensuring the appropriate thermal insulation in all atmospheric conditions at the same time. The thermal breaks applied in the windows have additional gaskets at the joining point with the sections, as well as tongues dividing the chamber between the internal and external aluminium sections into three parts.

The tightness is ensured thanks to using the special gaskets made of two-component EPDM synthetic rubber: solid and cellular, which guarantees its ageing resistance during the long-lasting exploitation, as well as very good thermal insulation. MB-70 is the first system in which this type of material was used for creating the central gasket.


In response to the growing demand for construction products with high thermal insulation have been developed window and door systems with thermal-70HI MB, MB-70US HI and a curtain wall of windows based MB-70CW HI. Their design is based on proven, sophisticated and highly valued base systems MB-70, MB-70US and MB-70CW. Thermal insulation framework of these systems is much greater than insulation systems underlying framework.

ALUPROF MB-70HI (With additional thermal insulation)

For the construction of the MB-70 HI coefficient Uf depending on the applied profiles and accessories range from 1.0 to 2.3 W / m2K. Increasing the thermal insulation is achieved by placing the central insulating chamber formed by a combination of thermal breaks aluminum, special insulating inserts. These contributions due to the low coefficient of thermal conductivity reduce heat flow through the chamber. The central location of inserts also reduces convection and thermal radiation.

We provide the possibility of coating with all kinds of powder varnishes within the whole range of RAL or NCS palette of colours. Profiles are painted using powder technology ensuring uniform and regular coating. Moreover, the varnish coat demonstrates high durability and weather resistance.

A very significant quality of the MB-45 system is the possibility to bend the profiles and create various types of arches and arch structures.