The trapdoor AKIFIRE™ WALL EI 120 is used on all partitions EI 120 with plates of various type and with a thickness of 13 or 15 mm. It is compulsory to use an upright 50 x 75 mm or larger, and the gap should be filled with rock wool thickness 60 mm and density 80 Kg/cm minimum. Access panel for walls and wall linings, made of a frame in galvanized steel section bars, galvanized steel framed door with infill in fireproof plates, complete of fire intumescent seal, safety small chains and snap closing with push opening. The access panel is designed to adjust to different systems, in case you need to install it in systems with plates 15 mm thick, the package is equipped with steel gauges 2 mm thick. The particular composition of plates used in the door, requires the use of a specific plaster included in the packaging. The use of any other type of plaster is not guaranteed from Akifix S.p.A.