Flex to Twin Wall Adaptor Ø 200
At a Glance
- - High-grade stainless steel construction (304 outer, 316 inner)
- - Dual-layer, 0.4mm thick design for durability
- - Compressed rockwool insulation with 200kg/m3 for exceptional thermal performance
- - HETAS approved and CE marked for safety compliance
- - Designed for solid fuel, gas, and oil appliance applications

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 200 is a premier solution for connecting MI-Flues multi-fuel liners to TWPro Twin Wall Chimneys. This unit is crafted for use with solid fuel, gas, and oil appliances, including woodstoves, gas coal effect fires, and boilers. Constructed with dual layers of stainless steel, the outer skin is made from durable 304-grade stainless steel (0.4mm thick), while the inner skin boasts 316-grade stainless steel (0.4mm thick) for enhanced heat resistance and longevity.
The adaptor features compressed rockwool insulation, offering a density of 200kg/m3 to ensure superior thermal performance. For safety, a critical 50mm distance from combustibles must be maintained. The TWPro system secured by locking bands offers ease of installation, and the entire assembly is both HETAS approved and CE marked, ensuring compliance with strict safety standards.
Perfect for use inside existing Class 1 Chimneys, this adaptor transitions seamlessly with a screw-fix coupling, keeping flex hidden within the chimney structure.
SKU: 2-200-101
Technical Specifications | |
---|---|
SKU | 2-200-101 |
Material Outer | 304 Stainless Steel, 0.4mm thick |
Material Inner | 316 Stainless Steel, 0.4mm thick |
Insulation | Compressed rockwool, 200kg/m3 |
Approvals | HETAS, CE |
Application | Solid fuel, gas, oil appliances |
Minimum Distance To Combustibles | 50mm |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Flex to Twin Wall Adaptor Ø 200 is a top choice for those requiring a robust, versatile solution for solid fuel, gas, and oil appliances. With National Flues' unbeatable prices, reliable nationwide delivery, and services tailored to both retail and trade customers, you can't go wrong.
The Flex to Twin Wall Adaptor Ø 200 is used to seamlessly connect MI-Flues multi-fuel liners to TWPro Twin Wall Chimneys, ensuring an efficient and safe transition.
National Flues is a trusted supplier of fireplace and flue products across the UK, known for unbeatable prices, reliable delivery, and excellent service for both retail and trade customers.
