5" Black Twin Wall Flue System
Twin wall flue systems are needed in new properties or houses with no chimney as this type of flue system has a double insulated skin making it safe to travel though walls. This range of 125mm black twin wall fittings and pipe are Hetas Approved and carry a 10 year warranty. They have an outer skin which is made from 304 grade stainless steel and is 0.4mm thick. This is then powder coated in a high temperature black finish. The Inner skin is made from 316 grade stainless steel and is 0.4mm thick, the iInsulation is compressed rockwool giving a density of 128kg per cubic metre and all parts are fully welded.