The Midtherm HTS Twin Wall Flue – 150mm Length is a versatile and durable component designed to enhance your flue system’s efficiency and safety. Available in black or stainless steel finishes, this twin-wall pipe segment is expertly crafted to deliver reliable performance while complementing modern and traditional installations alike. Perfect for extending single-wall flue systems through walls or ceilings, it provides a seamless transition with an actual installed length of 102mm.
Premium Design for Superior Performance
Engineered for durability and functionality, this flue section features a high-temperature insulated design, ensuring consistent operation even under demanding conditions. With a 450°C operating temperature and a 4-hour fire rating, it guarantees safety and performance for wood-burning stoves, multifuel setups, gas, oil, biomass, and pellet appliances. The laser-welded seams and machine-formed joints provide a sleek, polished appearance while ensuring a secure and precise fit.
The push-fit socket and spigot joint, paired with a locking band, simplifies installation, providing a quick and reliable connection every time. Each component is built with 0.5mm 316 2b stainless steel inner layers and 0.5mm 304 BA stainless steel outer layers, offering enhanced durability and resistance to corrosion.
Versatility and Compliance
Midtherm HTS Twin Wall flues are built to meet the highest safety and quality standards. The system is manufactured under ISO 9001-accredited quality management systems and holds CE certification. Additionally, Midtherm is a HETAS-registered manufacturer, reinforcing its reputation for producing trusted flue components.
This pipe section is compatible with a variety of fuels, making it a versatile choice for a wide range of installations. Whether you’re working with wood, multifuel, or biomass heating systems, this product ensures consistent performance and peace of mind.
Key Features:
- Choice of Finish: Sleek black or classic stainless steel to suit your aesthetic needs.
- High Durability: Constructed from premium stainless steel for long-lasting performance.
- Insulated Design: Withstands up to 450°C operating temperatures with a 4-hour fire rating.
- Effortless Installation: Push-fit socket and spigot joint system with locking band for secure and easy assembly.
- Flexible Applications: Ideal for vertical or angled installations through walls or ceilings.
- Certified Safety and Quality: Meets stringent standards, including ISO 9001, CE certification, and HETAS registration.
20-Year Warranty for Peace of Mind
Enjoy long-term reliability with a comprehensive 20-year warranty, available for registered and properly maintained HT-S installations. This robust warranty underscores Midtherm’s commitment to quality and customer satisfaction.
The Midtherm HTS Twin Wall Flue – 150mm Length is the perfect blend of style, safety, and functionality. Whether you are extending a single-wall system or designing a new setup, this pipe section offers dependable performance, exceptional durability, and an attractive finish. Ensure the success of your flue installation with this premium component, backed by decades of expertise and rigorous quality control.
Downloads:
- Specification Sheet/ Manual: Midtherm_HTS_manual
- Brochure: QF-34-08-BRO24A
- Warranty: QF-34-08-WARA-23A-1






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