Fire containment — Elements of building construction — Part 1: Ventilation ducts
Endiguement du feu — Éléments de construction — Partie 1: Conduits de ventilation
13.220.50 - Fire-resistance of building materials and elements.
91.140.30 - Ventilation and air-conditioning systems. Including ventilation ducts
Anula a: ISO 6944:1985
Es modificada por: ISO 6944-1:2008/Amd 1:2015
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