The MB-78 EI is used to perform internal or external fire partitions with a single and double leaf door of 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 shown that products made in this system have very good thermal insulation (Uf of 1.60 W / m2K) and acoustic (40 dB) properties. Due to its characteristics, to optimalization of the technology and production costs, compatibility with other window and door systems of ALUPROF and consistent technical development, it is and a very popular product in its class, and it is used in the construction market in a wide range.
The construction of the MB-78EI is based on thermally insulated aluminum profiles, the depth of which is 78 mm. They are characterized by a low coefficient of heat transfer achieved by the use of, among others, specially shaped 34 mm wide thermal breaks in their construction. Structures’ resistance to high temperature is provided by special elements of fire insulation GKF or CI introduced in the inner chambers of profiles and the spaces between the insulating profiles and steel accessories and fittings.
Filling thickness in the MB-78EI may be from 6 to 49 mm. Fillings can be provided by all the typical fire-resistant glass, as well as sandwich elements made of opaque steel sheet and the respective boards ensuring the required fire protection. Under this system, it is also possible to achieve a smoke proof elements.
Available system angle joints of walls, the possibility of bending profiles to build arched structures, and the use of oblique battens and decorative window bars (sashes) glued on glass, are the features that affect the shape and aesthetics of the building.
The range of acceptable dimensions of the structure includes fixed partitions up to a height of 4 m and Swing doors with dimensions of leaf up to 1.4 x 2.5 m. The door made of the MB-78EI can be installed either individually or as part of the larger design of glass walls, as well as the fire resistant facades of MB-SR50EI and MB-SR50N EI systems. Large construction possibilities, freedom of choice of a variety of hinges, locks, door closers and other hardware and optimized production technology are not the only advantages of this system. It also allows constructing automatic sliding door MB-DPA 78EI of fire resistance class EI15 and T30. It is also the foundation of sash-less wall constructions MB-78EI, walls MB-118EI, which can guarantee the fire resistance class of EI120.
The MB-78EI is covered by a Technical Approval ITB No. AT-15-6006 / 2012 and the British certificate CERTIFIRE No. CF 5138