Kadar morajo prispevati k protipožarnemu varstvu stavbe, morajo biti etažna vrata, vključno s steklenimi deli, ustrezno odporna proti ognju v celoti, po svojih izolacijskih lastnostih (zadržanje plamenov) in oddajanju toplote (termalno sevanje).
Landing doors, where they have to contribute to the protection of the building against fire, including those with glass parts, must be suitably resistant to fire in terms of their integrity and their properties with regard to insulation (containment of flames) and the transmission of heat (thermal radiation).