The Midtherm HTS Twin Wall Flue – 300mm Length is the ultimate choice for extending single-wall flue systems seamlessly through walls or ceilings. Precision-engineered for performance and durability, this twin-wall flue pipe is crafted with 0.5mm stainless steel inner and outer layers, ensuring long-lasting strength. With a sleek design available in a painted black finish, it integrates effortlessly into any installation.
Designed for versatility, this flue section can be installed vertically or at an angle to suit a wide range of heating systems, including wood, multifuel, gas, oil, biomass, and pellet stoves. The flue’s effective length of 252mm ensures reliable fitment, while its laser-welded seams and machine-formed joints guarantee consistent connections.
Safety and durability are top priorities with a 450°C operating temperature and a 4-hour fire rating, making it a robust solution for demanding environments. Locking bands are included with all male connectors for added stability, and the component meets stringent ISO 9001 quality standards and CE certification.
With a 20-year warranty for properly registered and maintained installations, Midtherm HTS Twin Wall Flue systems deliver unmatched peace of mind. Whether for residential or commercial use, this high-temperature insulated flue ensures optimal performance and modern aesthetics.
Key Features
- Efficient Maintenance: The 300mm length includes a convenient sweeping access point, simplifying routine cleaning and upkeep.
- High-Temperature Performance: Rated for continuous operation at 450°C and a 4-hour fire rating, making it suitable for a wide range of fuels.
- Durable Construction: Manufactured with 0.5mm 316 2b stainless steel for the inner layer and 0.5mm 304 BA stainless steel for the outer layer, ensuring long-lasting durability.
- Secure Connection: Locking bands are included on all components with male connectors, providing a consistent and secure fit.
- Versatile Compatibility: Designed for use with wood, multifuel, gas, oil, biomass, and pellets, offering flexibility for various heating systems.
Midtherm HTS Twin Wall System
The 300mm length is part of the Midtherm HTS Twin Wall High-Temperature Insulated Flue System, renowned for its:
- Laser-welded seams and machine-formed joints for a seamless, reliable connection.
- CE Certification and HETAS registration, reflecting superior quality and safety.
- Manufacturing under ISO 9001 accredited quality management systems.
- Suitable for; Wood, Multifuel, Gas, Oil, Biomass, Pellets
Peace of Mind Warranty
Enjoy a 20-year warranty with registered and properly maintained HT-S installations, demonstrating Midtherm’s commitment to quality and reliability.
Specifications:
- Operating Temperature: 450°C
- Material: Stainless steel inner (0.5mm 316 2b) and outer (0.5mm 304 BA)
Joint Type
Push fit socket and spigot type joint, to be installed with a locking band in place.
Downloads:
- Specification Sheet/ Manual: Midtherm_HTS_manual
- Brochure: QF-34-08-BRO24A
- Warranty: QF-34-08-WARA-23A-1






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