Twin Wall to Flex Adaptor Ø 200
At a Glance
- - Robust dual stainless steel construction (304 outer, 316 inner)
- - Compressed Rockwool insulation rated at 200kg/m3 for superior thermal protection
- - Seamless transition from twin wall chimney to flexible flue liner
- - HETAS approved and CE marked for safety and reliability
- - Versatile design suitable for solid fuel, oil, gas, woodstoves and more

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 Twin Wall to Flex Adaptor Ø 200 is a critical component for anyone looking to transition smoothly from a twin wall chimney system to a flexible flue liner. Crafted with precision, its outer skin is constructed from durable 304 grade stainless steel, while the inner skin boasts 316 grade stainless steel, both offering a thickness of 0.4mm. This combination ensures excellent durability and heat resistance.
The adaptor features compressed rockwool insulation, rated at 200kg/m3 density, providing efficient thermal protection. Fully welded and designed to meet rigorous standards, this product is HETAS approved and CE marked. With a safe distance requirement of 50mm to combustible materials, it promises secure installation.
Use this adaptor for solid fuel, gas/oil appliances including woodstoves, gas coal effect fires, and boilers.
SKU: 2-200-099
Technical Specifications | |
---|---|
SKU | 2-200-099 |
Adaptor Diameter | 200mm |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool (200kg/m3) |
Approvals | HETAS, CE |
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
At National Flues, we provide top-quality flue solutions that are rarely beaten on price. Our Twin Wall to Flex Adaptor Ø 200 is a robust and essential component for your chimney system, ensuring safe and secure connections. We pride ourselves on reliable nationwide delivery and excellent service for both retail and trade customers.
The Twin Wall to Flex Adaptor Ø 200 is designed to securely connect a twin wall chimney system to a flexible flue liner within an existing Class 1 chimney.
National Flues is a leading supplier of fireplaces and flues across the UK, known for competitive pricing, dependable nationwide delivery, and excellent service for both retail and trade customers.
