The MB-78EI system is used to make internal or external fire partitions with single and double-leaf doors of fire resistance class EI 15, EI 30, EI 45, EI 60 or EI 90, according to the PN-EN 13501-2: 2010 standard. Numerous tests and calculations have also proved that the products made of this system have very good thermal (Uf from 1.60 W / (m²K) and acoustic insulation (up to 40 dB).

Due to its properties, optimization of technology and production costs, compatibility with other ALUPROF window and door systems and consistent technical development, it is a very popular product in its class and widely used on the construction market.

The structure of the MB-78EI system is based on thermally insulated aluminum profiles, the depth of which is 78 mm. They are characterized by a low value of the heat transfer coefficient thanks to the use of, among others, special profiled thermal breaks 34 mm wide. The structure’s resistance to high temperature is ensured by special GKF or CI fire insulation elements introduced into the internal chambers of the profiles and into the insulation spaces between the profiles, as well as steel accessories and connectors.

The thickness of the fillings in the MB-78EI system ranges from 6 to 49 mm. The fillings can be all typical fireproof panes, as well as layered opaque elements composed of sheet metal and appropriate boards providing the required fire protection. As part of this system, it is also possible to obtain smoke-tight structures.

The angular connections of the walls available in the system, the possibility of bending profiles and building arched structures, as well as the use of diagonal lacings and decorative muntins glued on the glass are features that affect the shapes and aesthetics of the building.

The range of permissible dimensions of the structure includes fixed partitions up to 4 m high and rebate doors with leaf dimensions up to 1.4 x 2.5 m. The doors of the MB-78EI system can be mounted individually, as part of larger structures with glass walls, and in fire facades MB-SR50EI and MB-SR50N EI systems. Large design possibilities, freedom of selection of various hinges, locks, door closers and other fittings, as well as optimized production technology are not the only advantages of this system. It also allows for the production of automatic sliding doors MB-78EI DPA with fire resistance class EI15 or EI30, it is also the basis for the construction of the mullion-free walls MB-78EI, walls MB-118EI, enabling fire resistance in the class EI120.

The MB-78EI system is covered by the ITB technical approval No. AT-15-6006 / 2016 and the British CERTIFIRE certificate No. CF 5138