The Midtherm HTS 125mm (5") Twinwall Swedish Universal Cowl is a compact anti-downdraft cowl that helps prevent wind from entering the chimney via the cowl. It has an internal top to prevent rain and a wraparound shielding to prevent wind, with a fine internal mesh to stop birds. However because of this, it is only suitable for gas or oil fires. The internal diameter of this cowl is 125mm and the outside diameter is 180mm. It is available in a choice of stainless steel or painted black finishes. 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.