This standard BS EN 13403:2003 Ventilation for buildings. Non metallic ducts. Ductwork made from insulation ductboards is classified in these ICS categories:
91.140.30 Ventilation and air-conditioning systems
This European Standard specifies the basic requirements and characteristics for ductwork made of insulation ductboards and used in ventilation and air conditioning systems of buildings subject to human occupancy. This standard does not specify the fire reaction classification for different types of ductboards.
