The MB-78 EI system is used for internal or external fire partitions with one- and two-leaf doors with fire resistance class EI 15, EI 30, EI 45, EI 60 or EI 90, according to PN-EN 13501-2: 2010. Numerous studies and calculations have also proved that products made of this system have very good thermal insulation (Uf from 1.60 W / m2K) and acoustic (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 used on the construction market in a wide range.
The construction of the MB-78EI system is based on thermally insulated aluminum profiles, whose depth is 78 mm. They are characterized by a low value of the heat transfer coefficient due to the use in their construction, among others special profiled thermal breaks with a width of 34 mm. The resistance of the structure to high temperature is ensured by special elements of GKF or CI fire insulation introduced into the internal chambers of the profiles and into the insulation spaces between the profiles and steel accessories and connectors.
The thickness of fillings in the MB-78EI system is from 6 to 49 mm. The fillings can be all typical fire-resistant glazing as well as layered non-transparent elements made of sheet metal and appropriate boards providing the required fire protection. As part of this system, smoke-proof constructions can also be obtained.
The angular wall connections available in the system, the possibility of bending profiles and the construction of arch structures, as well as the use of slanted bindings and decorative muntins glued on glass are the features that affect the shapes and aesthetics of the building.
The scope of permissible dimensions of the structure includes fixed divisions up to 4 m high and the door with wing sizes up to 1.4 x 2.5 m. The doors of the MB-78EI system can be assembled individually, within larger glazed wall structures and in fire-resistant façades. MB-SR50EI and MB-SR50N EI systems. Large construction possibilities, freedom of choice of different hinges, locks, door closers and other fittings as well as optimized production technology are not the only advantages of this system. It also allows you to perform automatic sliding doors MB-78EI DPA with fire resistance class EI15 or EI30, is also the basis for the construction of MB-78EI walls without walls, MB-118EI walls, enabling fire resistance in 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