× National Flues
Free Delivery on All Orders Over £100
We have 100% 5 Star Reviews on Trustpilot
Enjoy Our Free Flue Design Service
Delivery To Mainland UK Addresses
Call Our Experts on 01670 206999

Flex to Twin Wall Adaptor Ø 80 (2-80-101)

National Flues presents the Flex to Twin Wall Adaptor Ø 80, a premium chimney fitting designed for seamless integration between MI-Flues multi-fuel liners and TWPro Twin Wall systems. Engineered from high-quality stainless steel with robust insulation, this adaptor is the ideal solution for woodstoves, gas appliances, oil boilers, and coal effect fires. With HETAS and CE certifications, National Flues ensures that safety and performance are never compromised.
Great value at £58.99
Give us a call if you find it cheaper and we'll try to price match.

 

Payment Options

At a Glance

    Seamless connection between MI-Flues multi-fuel liners and TWPro Twin Wall Chimney systems
    Constructed from premium 304 and 316 stainless steel for superior durability
    0.40mm thick stainless steel walls ensure optimal heat resistance
    Compressed rockwool insulation at 200kg/m3 for enhanced thermal performance
    HETAS and CE certified, meeting EN1856-1 standards
    Enforces a safe 50mm clearance to combustible materials
    Easy screw-fix coupling with a secure Locking Band for installation

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

We Won't Be Beaten On Price

At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:

  • Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
  • Operational Efficiency: We have streamlined processes to reduce overhead.

Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).

“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.

Have Questions?
Phone: 01670 206999
Email: [email protected]

The Flex to Twin Wall Adaptor Ø 80 is a vital component for connecting MI-Flues multi-fuel liners to TWPro Twin Wall Insulated Chimney systems. Designed for use with solid fuel, gas, and oil appliances—such as woodstoves, gas coal effect fires, and boilers—this adaptor boasts superior construction quality. The outer skin is crafted from 304-grade stainless steel, and the inner skin from 316-grade stainless steel, both with a 0.4mm thickness.

Compressed rockwool insulation ensures a density of 200kg/m3, offering robust heat resistance. Each piece is fully welded to ascertain durability and reliability. For safety, a 50mm clearance to combustible materials is mandatory.

Certified by CE and HETAS, it meets the stringent standards EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20, making it a dependable choice for both domestic and commercial installations. Installation is straightforward with the use of a Locking Band to secure components together, ensuring a tight and secure fit.

SKU: 2-80-101

Technical Specifications
ModelFlex to Twin Wall Adaptor u00d8 80
Outer Material304 Stainless Steel (0.40mm)
Inner Material316 Stainless Steel (0.40mm)
InsulationCompressed Rockwool (200kg/m3)
CertificationHETAS / CE
StandardsEN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20
Clearance50mm to Combustibles
Appliance CompatibilityWoodstoves, Gas Appliances, Oil Boilers, Coal Effect Fires
• Ensure the adaptor is installed inside an existing Class 1 chimney to avoid any visible transitions outside the brick or clay structure. • Maintain a minimum 50mm clearance from the outside of the flue to any combustible material such as wood, plasterboard, or insulation. • Secure all components using the recommended Locking Band to ensure a tight, secure, and long-lasting fit. • Follow the detailed manufacturer’s guidelines and local regulations to guarantee proper installation and safety compliance. • Always verify that all joins are fully welded and no gaps exist for optimal performance and security.

The adaptor seamlessly connects MI-Flues multi-fuel liners to TWPro Twin Wall Chimney systems, facilitating safe and efficient chimney transitions.

It is suitable for solid fuel, gas, and oil appliances, including woodstoves, gas coal effect fires, and boilers.

The outer skin is made from 304-grade stainless steel, and the inner skin is made from 316-grade stainless steel—both at a thickness of 0.4mm. The insulation is comprised of compressed rockwool with a density of 200kg/m3.

Yes, it is CE marked and HETAS approved, meeting EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20 standards.

Ensure a distance of 50mm is maintained from the outside of the flue to any combustible material (such as wood or plasterboard). Secure the components using a Locking Band during installation.

No, the transition should be made inside an existing Class 1 chimney, ensuring no flex is visible outside the brick or clay chimney.

Absolutely, National Flues provides reliable delivery services across the UK and caters to both retail and trade customers.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, May 22nd. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

Warranty & Returns +

All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

Price Match Guarantee +

We will match any price like for like on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal
Free Design Service Click To Call Our Experts