Flex to Twin Wall Adaptor Ø 80
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]
- Info
- Specs
- Install
- FAQs
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 | |
---|---|
Model | Flex to Twin Wall Adaptor u00d8 80 |
Outer Material | 304 Stainless Steel (0.40mm) |
Inner Material | 316 Stainless Steel (0.40mm) |
Insulation | Compressed Rockwool (200kg/m3) |
Certification | HETAS / CE |
Standards | EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20 |
Clearance | 50mm to Combustibles |
Appliance Compatibility | Woodstoves, Gas Appliances, Oil Boilers, Coal Effect Fires |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. If you need faster stove or fireplace delivery please give us a call. We can often 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. If you find it cheaper within 48 hours, we'll refund the difference.
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National Flues Ltd Verdict
The Flex to Twin Wall Adaptor Ø 80 is a top-notch choice for all your chimney fitting needs. With high-quality construction and HETAS approval, it’s a product you can trust. We offer reliable delivery across the UK and serve both retail and trade customers.
The Flex to Twin Wall Adaptor Ø 80 is designed to connect MI-Flues multi-fuel liners to TWPro Twin Wall Chimney systems, ensuring a seamless and secure transition for various appliance installations.
National Flues is a leading supplier of fireplaces and flues in the UK, known for rarely being beaten on price and offering reliable nationwide delivery. They cater to both retail and trade customers, ensuring secure online payments for a seamless purchase experience.
