DIN 18090:1997-01

The document deals with lift landing doors (hinged, pivoted and folding) which move on a horizontal plane, with or without glazing but without insulationg materials, for lift walls which, in accordance with the laender building regulations, are at least either fire resistant or satisfy the requirements of fire resistance class F 90 and the principlal parts of which are made of non-combustible materials (class F 90-AB as specified in DIN 4102-2.).