NA 041
DIN Standards Committee Heating and Ventilation Technology and their Safety
Pre-standard
DIN V 4102-21
DIN V 4102-21
Fire behaviour of building materials and building components - Part 21: Assessment of the performance of fire resistant air ducts
Title (German)
Brandverhalten von Baustoffen und Bauteilen - Teil 21: Beurteilung des Brandverhaltens von feuerwiderstandsfähigen Lüftungsleitungen
Procedure
VN