Fire door has several leaf panels defining chamber containing water charge for thermal insulation

摘要

The fire door has panels (2) placed in door opening and defining a double wall construction with a thermal insulation infill. The door (1) has several leaf panels formed into a prefabricated assembly for installation. The leaf panels form a chamber (6) to receive a complete infill which can be water. There can b several leaf assemblies used in a large passageway opening.