The system is designed for the construction and execution of flat, light-weight curtain walls of the suspended or filling type, roofs, skylights and other structures.  The system is a modification of a very popular MB-SR50 façade  system, meeting the demands of current trends in architecture.

The shape of mullions and transoms allows for erecting aesthetic façades with visible narrow division lines, ensuring at the same time durability and strength of the structure. Rounded profiles of the radius of 2.5 mm, characteristic of the MB-SR50 system,  have been replaced  in the MB-SR50N  system by “sharp edge”. This change essentially influences the  aesthetic  aspect of the  structure.  The applied shape of profiles  enables selection of mullion and transom profiles which flush with  each other on the inside surface of the façade.  When the structure is  glazed,  visually it forms a truss. It facilitates at the same time aesthetic and very accurate connection with other elements of the development – with internal walls and suspended ceilings.




Among characteristics  of the MB-SR50N system is a wide choice of mullion profiles  (between 65 mm and 325 mm) and transom profiles  (between 5 mm and 189.5 mm) and  modern solutions designed for accessories and connecting members.  Such features allow for  a wider range of loads  which are being carried – an infill in a fixed module of the façade may weigh up to 450 kg. The MB-SR50N system  gives considerable  freedom while laying out  façade fixing points. A wide glazing range  allows  for application of glazing of large dimensions and two-chamber  insulating glazing units.

Application of a continuous thermal barrier made of insulating material called ”HPVC” and profiled (grooved) EPDM glazing gaskets makes it possible to obtain proper thermal insulation class  and reduce  to a minimum vapour condensation on aluminium elements.

Among aesthetic varieties of the  MB-SR50N system, likewise in older mullion / transom curtain walls  are  the following versions: PL (so-called “horizontal and vertical line” where an emphasis is placed on either horizontal or vertical division) and a semi-structural façade of the EFEKT type. A particular attention should be  drawn to the version featuring enhanced thermal insulation performance, i.e.  MB-SR50N HI, in which  special two-component insulators have been applied.

The MB-SR50N system enables installation in the façade of various types of windows  and doors,  including windows designed  for  the  façades incorporating an awning window and a roof window. A  particularly good visual  effect is achieved  when façade-integrated windows based on the MB-SR50 IW solution  are installed in this system.

Lintel and sill belts of the façade, due to  a sandwich-type structure in which non–flammable materials have been used, such as mineral wool and plasterboards,  may  obtain, like in the case of other  Aluprof systems, fireproof classification EI30  and EI60, depending on the structure.

In order to construct broken walls, both in their vertical and horizontal sections, there have been used special overlapping profiles and properly shaped clamping and concealing strips with the  effect that there are no limitations whatsoever as to shaping the building body and the need to use special corner mullions is eliminated.

As regards the declaration of conformity for vertical façades based on the MB-SR50N system, a harmonized European Standard PN-EN 13830 “Curtain Walling. Product Standard” has been applied as a reference document.