NA 041
DIN Standards Committee Heating and Ventilation Technology and their Safety
Standards
[Withdrawn]
DIN 24147-1
DIN 24147-1
Ventilation and air conditioning - Fittings for circular sheet metal ducts - Survey, dimensions, general principles
Title (German)
Raumlufttechnik - Formstücke für runde Luftleitungen - Übersicht, Maße, Allgemeine Grundlagen