Sauresta's Double-Wall 50 mm chimneys use a thicker mineral wool insulation layer than the 25 mm range, giving stronger heat protection, lower outer-wall temperatures, and safer clearance to combustible materials.
Both the SCAND version, with its seamless hidden-joint exterior, and the Extra version, built for oil, gas, and solid fuel across a wide size range, are certified to EN 1856-1 for corrosion and soot-fire resistance.
Compared to the 25 mm range, the 50 mm chimneys suit installations where extra insulation, larger diameters, or closer proximity to wood and other combustible structures are a priority.
