Insulated chimneys type SPS IZOL Application Metal positive pressure flue liners type SPS applied to carry off exhaust emissions from both condensing and non-condensing fan-burner boilers with a sealed combustion chamber. Fuel Oil and gas Specification Material acid-proof steel 1.4301 Material thickness 0,5mm Working temperature ≤200 °C Diameter range 80mm, 100mm Certificates Technical description Declaration of commercial properties