CONDENSOR SL single wall stainless steel flues can be used for the creation of a chimney, the lining of a chimney or the connection of a boiler.They  are multi-fuel, continuous-welded and air and watertight. They are made in 444 stainless steel. They are suitable for any type of gas, oil and wood fired  boilers of low and medium power (except high-output oil). They can be supplied with a factory-fitted seal when used with a condensation boiler. These flues are particularly suitable for gas-tight reducers  for high-output boilers. Poujoulat 10-year guarantee. All  parts are labelled with : - direction  of fitting; - reference, diameter and length of the part; - the Standard classification ; - the bar code. Technical  characteristics Internal Ø (mm) 125 140 155 180 200 Max. external Ø External Ø + 11 mm Material STAINLESS  STEEL 444 high gloss (904 L on request for oil, flue gases < 130°C) Thickness  (mm) 4/10 (tee at 90°, 95° and 135° : 6/10) Connection POUJOULAT  patent calibrated on 50 mm cone in cone compatible with the same diameter in CONDENSOR CD Assembly Locking  band with quick locking and safety ring Watertight against condensation in the reducers Lip  seal (please specify with order)