The DF - Ductfire M series combines the excellent performance of a twin wall chimney system with the EI 120 fire resistance performances.
In addition to being CE certified as a flues system, Ductfire M can pass through a compartmentalized environment ensuring passive fire safety; it can therefore be used when the smoke and heat evacuation duct passes through rooms subject to specific fire prevention regulations, such as tunnels, galleries, garages, underground rooms, smoke filter rooms, shopping centers, multi-storey buildings.