The Midtherm HTS 180mm (7") Twinwall TW-SW Adapter is used should you need to convert from twinwall back down to single wall. A TW-SW adapter is not an appliance connector and cannot be used to connect from single wall into twinwall. The internal diameter of this adapter is 180mm and the outside diameter is 225mm. It is available in a stainless steel finish as standard. HTS is a Class 1. Twinwall chimney product manufactured by Midtherm Flue Systems right here in the UK and is suitable for use in both domestic and commercial applications. HTS can be used with a variety of different fuels including gas, oil, wood and multifuel installations where appliances burn with flue gas temperatures of up to 450°C under continuous firing.
Midtherm are a family run British company that have been manufacturing for over 45 years. Founded by Ray Andrews in 1970, Midtherm has steadily grown over the years into one of the leading chimney manufacturers in the industry. The HTS range is the culmination of years of design and development work, and is a firm favourite within the heating industry.