MB-70 is a modern aluminium system designed for providing demanding thermal and acoustic insulation of exterior architectural building elements such as various types of windows, doors, vestibules, and spatial structures.

System profiles have three chambers. The structural depth of window profiles is equal to 70 mm (frame) and 79 mm (sash), and of door profiles 70 mm and 70 mm respectively.  These depths of frame and sash/leaf profiles give the effect of one surface from the exterior side after closing – in the case of windows, and the effect of uniform surfaces of the leaf frame – in the case of doors. The profile shape ensures sleek and durable window and door structures.
Glazing units 21-57 mm thick in window sashes and 12-48 mm thick in fixed windows and door leaves may be used in the system. This wide range of infill thicknesses guarantees that all typical and non-standard windows may be used.
A wide range of colours in the standard palette will satisfy the needs of even the most demanding customers. Colour coatings are made by powder coating or anodising.

The MB-70 system is characterised by an exceptionally low value of the heat transfer coefficient Uf thanks to the application of special thermal breaks and gaskets.  This is particularly important as the requirements for energy management and environment protection are continuously increasing. Coefficient Uf for MB-70 structures ranges from 1.5 to 2.39 W/m2K depending on the profiles and accessories used. The system features omega-shaped thermal breaks with a width of 34 mm (for windows) and 24 mm (for doors) made of polyamide reinforced with fibreglass. The offered shape of thermal breaks increases profile rigidity as compared to flat thermal breaks and facilitates profile drainage, ensuring appropriate thermal insulation in all weather conditions. The thermal breaks in the windows have additional gaskets at the point of contact between the profile and the break as well as tongues dividing the chamber between the internal and external aluminium profiles into three parts.
Weathertightness is ensured thanks to special gaskets made of two-component EPDM synthetic rubber: solid and cellular, which guarantees its ageing resistance during long-term operation as well as very good thermal insulation.  MB-70 is the first system to feature this type of material for the centre gasket.
The MB-70 system forms the basis for solutions featuring enhanced thermal insulation performance such as MB-70HI, MB-70US HI and for warm-cold facades based on MB-70CW HI windows.