The system which enables execution of smoke proof doors and wall segments. The smoke proof door MB-45D has been allocated to the smoke proof class S30. The segments used to execute smoke proof partitions MB-45D have been assigned to smoke proof class S50, according to the standard PN-90/B-02867. The system is applied to make smoke tight barriers wherever fire proof joinery is not required.

MB-78EI – the system features by both tightness and resistance to fire. It complies with the requirements of Polish and European standards becoming more and more stringent with regard to marking off a zone in a building on fire, from which people and property can be safely evacuated. The system of firewalls of the MB-78 EI system is designed to execute internal or external barriers limiting the spread of fire, fixed or fitted with single or double doors, of fire resistance class EI15, EI30 or EI60, according to the standard PN-B-02851-1:1997.