The Midtherm HTS Twin Wall Flue – 1000mm Length in Matt Black provides a durable, high performance solution for developing a safe and efficient chimney system. Its engineered twin wall design delivers stability and excellent thermal efficiency for both straight and angled installations, supporting seamless transitions when moving through ceilings or external walls. Built as an extension for single wall systems, it enables a continuous and compliant flue route for a wide range of heating appliances.
Constructed from premium stainless steel, the flue features precisely formed joints and laser welded seams for a secure, airtight connection. The 0.5mm 316 2b stainless steel inner wall and 0.5mm 304 BA stainless steel outer wall offer strong resistance to corrosion and high temperature exposure. The matt black finish provides a clean, modern appearance suitable for contemporary interiors while maintaining long term durability in demanding environments.
With a nominal length of 1000mm and a fitted length of 955mm, this component allows accurate configuration of your flue layout. It supports continuous operating temperatures of up to 450°C and carries a 4 hour fire rating, ensuring resilience under sustained heat. It is compatible with wood, multifuel, gas, oil, biomass, and pellet appliances, making it suitable for residential, commercial, and industrial systems.
Features and Benefits
- Twin wall stainless steel construction for long term durability
- Matt black finish for a refined, modern aesthetic
- High temperature performance up to 450°C
- Push fit joint system with locking band for secure installation
- CE certified and HETAS approved for compliance and safety
- Compatible with multiple fuel types
- ISO 9001 manufacturing standards ensure consistent quality
- 20 year warranty with registered installation






Reviews
There are no reviews yet.