Screw-FIX Long Tail Adaptor - Ø 200
At a Glance
- Secure, gas-tight connection between rigid flue systems and MI-FLEX flexible liners
- Made from premium 316L stainless steel for durability
- Withstands high temperatures up to 600°C
- Complies with UK Building Regulations Document J
- Suitable for multi-fuel appliances including wood, oil, gas, and smokeless coal

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: sales@nationalflues.com
- Info
- Specs
- Install
- FAQs
The Screw-FIX Long Tail Adaptor - Ø 200 is a crucial installation accessory in the MI-FLEX family, specifically engineered for use with MI-FLEX 316 and 904 flexible flue liners. This 0.6mm 316 stainless steel adaptor facilitates a seamless transition from a rigid single wall connecting flue system to a flexible flue liner, ensuring a gas-tight and secure fit. Building Regulations Document J mandates that flexible flue liners must be fully enclosed within a masonry chimney, making the Screw-FIX Long Tail Adaptor essential for compliance and safety.Suitable for use with multi-fuel appliances, this adaptor can handle temperatures up to 600°C, making it ideal for wood (with moisture content less than 20%), smokeless coal, gas, and oil appliances.
The adaptor should be installed completely within the existing masonry chimney, and it is imperative to use fire cement, ceramic rope, tape, or high-temperature sealant to ensure a secure and leak-free connection.Maintenance is straightforward, but it is crucial. Chimney systems should be designed to allow easy sweeping and maintenance access. Solid fuel applications require sweeping by a competent professional, ideally a HETAS registered sweep.
We recommend cleaning and inspecting the chimney at least once a year and sweeping twice a year for solid fuel systems to remove deposits and check for blockages.
SKU: 25-200-MAELT
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
At National Flues, we are proud to offer the Screw-FIX Long Tail Adaptor - Ø 200 as a high-quality solution for connecting rigid flue systems to flexible liners. This essential adaptor ensures a secure and gas-tight connection, adhering to UK building regulations. With reliable nationwide delivery and competitive prices, we serve both retail and trade customers with excellence.
The Screw-FIX Long Tail Adaptor is designed to connect rigid single wall flue systems to MI-FLEX flexible liners, ensuring a secure and gas-tight installation.
National Flues is a leading supplier of fireplaces and flues across the UK, renowned for competitive prices, reliable nationwide delivery, and excellent service to both retail and trade customers.
