Ponzio NT 78EI three-chamber system is designed to set up internal and external fire partitions. Ponzio NT 78EI allows you to assembly single and double doors opening to the outside and the inside of the various embodiments threshold. The system uses thermal pad (width - 35 mm). Depth of frame and sash is 78 mm. The three-chamber structure and additional reinforcing elements allows the system to make the construction of large size. Characteristics of system: Precise relation to other Ponzio systems; Facing of door leaves on the outer side; Many variants of realization door leaves; The possibility of realization smoke control door; The possibility of realization arch constructions; Two types of fire resistant fillings: gypsum, aluminosilicate; Fillings: 8-50 mm.