HTS 180mm (7") Twinwall 500mm Length

HTS 180mm (7") Twinwall 500mm Length - The internal dimension on this twinwall flue pipe is 180mm (7") and the outside diameter is 225mm (9"). All wall brackets, support plates & flashings are designed to take the external diameter of the flue pipe (for example a 'HTS 180mm (7") Twinwall Support Plate' will actually have an opening of 225mm ready to except the outside diameter of the 7" HT-Plus Flue. You will never need to buy two different diameters of twinwall flue components on the same installation).

HT-Plus 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. HT-Plus can be used with a variety of different fuels including gas, oil solid and multifuel installations where appliances burn with flue gas temperatures of up to 450°C under continuous firing. Midtherm’s HT-Plus Twinwall is widely recognised within the fireplace and stove industry as one of the best pre-fabricated chimney systems money can buy and is listed in the official HETAS guide. All HT-Plus Twinwall flue pipe is made using the latest manufacturing and welding technology ensuring the highest of qualities. Each length, bend, tee, adaptor and cowl is made in the same way:

0.5mm 304 Stainless Steel Outer Skin
25mm Mineral Wool Insulation
0.5mm 616L 2B Grade Stainless Steel Inner Skin

HTS Twinwall has a 4hour fire rating for stability and integrity. BS476 four hour fire rating tested at BRE, report no 215945 (copies available upon request).

Lengths and fittings have a quick and easy to use socket and spigot jointing system which is leak proof when installed as recommended. Locking bands are used to secure the joints on site, and one locking band is provided free of charge with all lengths, adaptors, bends & tees.

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