The system is designed for the construction and fabrication of flat, light-weight curtain walls, of the suspended or filling type, roofs, skylights and other structures. The shape of mullions and transoms allows erecting aesthetic façades with visible narrow division lines, ensuring at the same time durability and strength of the construction. Additionally, the profiles have rounded outer corners, which gives an effect of a “soft line”. The so-called “horizontal and vertical line” forms an aesthetic variety of MB-SR50 façade, with an emphasis placed on either horizontal or vertical division.

The system is based on the MB-SR50 façade without any aluminium elements on the outside, which gives the effect uniform glass, so called “semi-structure”.

A structural system without any aluminium elements from the outside, which gives the possibility to construct and fabricate light weight curtain walls of the suspended and filling types, roofs, skylights and other structures designed for application in buildings of the general use. It allows attaining thermal insulation performance within material groups RMG 2.1 - 1 according to the standard DIN 4108.

On the basis of the MB-SR50 mullion-transom wall the overlay system was created, enabling combining construction materials featuring different material properties on the inside and different on the outside of the building.

The roof window is a part of the MB-SR50 system. Windows of this type are intended for installation on roofs featuring the gradient between 10° and 40° in relation to the horizontal line and may be applied to make ventilation hatches.

The system of mullion / transom wall MB-SR50 EI is designed for the construction and fabrication of light-weight fireproof curtain walls of the suspended or filling type, featuring fire resistance classes EI15, EI30, EI45, EI60 according to the standard PN-EN 1364-3. The system has been classified as non-fire propagating (NFP).

The curtain wall system with enhanced thermal insulation performance. The energy efficiency of the whole building depends, to a large extent, on the thermal insulating performance of its facade. In this respect, the MB-SR50 mullion / transom wall can meet ever growing expectations of architects and investors of modern facilities. The offer of Aluprof systems includes the MB-SR50 HI system, in which the value of overall heat transfer coefficient of the frame section U_f ranges between 0.81 and 1.27 W/m²K, depending on the thickness of the infill.

The curtain wall system with a window opening inward and a frame imperceptible when looking from the outside. In façades based on the mullion/transom system there can be applied different opening elements, such as inward or outward opening windows with a visible frame (MB-SR50 RT window), as well as awning windows with no frame on the outside, based on profiles of the structural system MB-SG50, opening outside. A novelty here, however, is the construction in which the window opens inward but its external appearance is in no way different from fixed glazing. Inside, the effect of mullions and transoms lying in the same plane is attained. Such window is structurally glazed – a window pane is glued to the frame profile without a “step”. High aesthetic values of the MB-SR-50 IW are not the only advantage of this solution, as the system also features high thermal insulation performance – the value of coefficient of heat transfer through the frame is U_f=1.82 W/m²K (for the standard version).

The MB-SG50 awning window may be applied in the standard system of a transom-mullion wall MB-SR50, as well as in modified systems MB-SR50 PL and MB-SR50 EFEKT.
Among the most important advantages of this solution are exceptionally economical sections adding lightness to the entire structure, which is of particular significance when looking from the outside.

This segment-based curtain walling system is intended for execution of individual facilities, in case of which time-efficiency of the installation and elimination of external scaffolding during the erection are among basic requirements.