Triple-wall 25 mm Extra
Purpose: To remove the products of combustion from the combustion space to the atmosphere
Fuel: Oil, gas, solid
System marking according to EN 1856-1
Ø 80-300 mm, T600-N1-W-Vm-L50(050-100)-G80
T600°C – maximum operating temperature
N1 – natural draught
W – wet operating conditions
Vm – resistant to corrosion
G – resistance to soot fire
80 – distance to combustible materials
Flue liner - L50 – stainless steel 1.4404
Ø - 80-200 mm – 0.5; 0.6; 0.8; 1.0 mm
Ø - 250-300 mm – 0.6; 0.8; 1.0 mm
The middle pipe – stainless steel 1.4301
The outer pipe – stainless steel 1.4301
The outer pipe – painted stainless steel 1.4301
The pipe of the single wall air duct – stainless steel 1.4301 with silicone gasket
The pipe of the single wall air duct – painted stainless steel 1.4301 with silicone gasket
Insulation – injected mineral wool, thickness -25 mm, density 180 kg/m³
Why choose triple-wall 25 mm EXTRA chimneys?
- Built for any fuel.
Works with oil, gas, and solid fuel — one chimney for almost any heating system. - Handles extreme heat.
Rated up to 600°C operating temperature (T600), well above standard household chimneys. - Combines exhaust and air supply.
Carries flue gas out and draws combustion air in through one system, keeping the building 100% airtight. - Wide size range.
Available from Ø80 to Ø300 mm, fitting everything from small stoves to larger heating systems. - Strong, corrosion-resistant build.
Inner, middle, and outer pipes all in top stainless steel, with a sealed silicone gasket air-duct pipe. - Safe insulation. 25 mm injected mineral wool (180 kg/m³) keeps surfaces safer and lowers heat loss.
- Certified for tough conditions.
Meets EN 1856-1, rated for wet operating conditions, corrosion resistance, and soot-fire resistance.
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