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904L Mi-FLEX 180mm x 1m CUT LENGTH (36Z-180-1)
National Flues presents the premium 904L Mi-FLEX flue liner – a high quality, flexible chimney relining solution ideal for gas, oil, and solid fuel systems. Crafted from robust 904L stainless steel and endorsed with HETAS and CE certifications, this innovative product is engineered for performance, durability, and optimal safety. Enhance your chimney’s efficiency with this industry-leading relining system from National Flues, renowned for quality products and exceptional customer service.
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In Stock
£80.99
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Dual-layer 904L stainless steel for superior durability
Consistent 0.105mm thickness for optimal performance
Unique Omega-Lock seam for secure, airtight installation
Lifetime warranty with Screw-FIX accessories when installed correctly
HETAS approved and CE certified for safety and quality
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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.
The 904L Mi-FLEX 180mm x 1m CUT LENGTH flexible flue liner is meticulously designed to offer robust and efficient performance for relining masonry chimneys. Constructed with dual-layered 904L grade stainless steel, both the smooth inner and the convoluted outer layers boast a thickness of 0.105mm, ensuring lasting durability and resistance to corrosion. The unique Quattrolock seam sealing method adds an extra layer of security, making this liner apt for use with gas, oil, coal, coke, cured dry logs, dry peat, and approved smokeless fuels.
Approved by HETAS and CE certified, this liner guarantees safety and compliance with industry standards. Installation is straightforward — always fit from the top, ensuring the arrows indicating gas flow are pointing upward. Maintenance is minimal, though it’s recommended that chimneys servicing solid fuel appliances be swept at least once a year.
Install the 904L Mi-FLEX flue liner from the top of your masonry chimney, ensuring that the gas flow arrows point upwards. Always use the recommended Screw-FIX accessories for a secure, compliant installation. Follow the manufacturer's guidelines closely, verifying that each section is aligned correctly to prevent any gaps. Regular maintenance, including an annual chimney sweep (or more frequently for solid fuel systems), is advised to ensure efficiency and safety over time.
Yes, this flue liner is suitable for use with gas, oil, coal, coke, cured dry logs, dry peat, and approved smokeless fuels.
904L grade stainless steel is known for its high resistance to corrosion and excellent durability, making it ideal for flue liners exposed to high temperatures and harsh conditions.
It should be installed from the top of the chimney, with the arrows indicating gas flow pointing upward. Ensure to secure a string of appropriate length to the Nose Cone for easier installation.
Yes, this flue liner has been approved by HETAS and is CE certified, ensuring it meets all necessary safety and quality standards.
It's recommended to sweep and maintain chimneys serving solid fuel appliances at least once a year, or more frequently if necessary.
Absolutely, this double-skinned flexible flue liner is specifically designed for relining within a masonry chimney.
Yes, the 904L Mi-FLEX flue liner comes with a lifetime manufacturer’s warranty when used with Screw-FIX accessories.
Delivery Information +
We work relentlessly to ensure you get your order fast.
Estimated delivery for this product is Wednesday, April 30th.
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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.
Read our review in our 904L Mi-FLEX 180mm x 1m CUT LENGTH buyers guide
Introduction
Welcome to the comprehensive buyer’s guide for the 904L Mi-FLEX 180mm x 1m Cut Length flue liner from National Flues. In today’s environment, efficiency and safety in home heating are of paramount importance. Whether you are upgrading an existing system or installing a new one, understanding the vital aspects of your chimney relining needs can make all the difference in achieving optimal performance and peace of mind.
Product Overview
The 904L Mi-FLEX flue liner is engineered from high-grade 904L stainless steel, featuring a dual-layer construction with each layer boasting a 0.105mm thickness. This design choice ensures that even under extreme temperatures and corrosive conditions, your chimney remains secure and efficient. The innovative Omega-Lock seam sealing method applied to this product guarantees a leak-proof installation, critical in maintaining theoretical thermal performance and overall integrity. Furthermore, the product is approved by HETAS and carries CE certification, meeting the rigorous standards required for a reliable and safe flue solution.
Key Features and Benefits
Dual-Layer Construction: The use of two layers of 904L stainless steel not only enhances durability but also provides superior insulation. This means that heat retention is optimised, thereby improving the efficiency of your heating system.
Uniform Thickness: Both the inner and outer layers are precisely 0.105mm thick, ensuring a consistent performance that stands up well to the demands of high-temperature environments. This consistency means you can rely on the flue liner for years to come without the worry of premature deterioration.
Omega-Lock Seam: The exclusive Omega-Lock seam design offers a secure, airtight bond throughout the entire length of the liner. This feature greatly reduces the risk of leaks and enhances the overall efficiency of your chimney, ensuring safe combustion and reduced emissions.
Multi-Fuel Compatibility: From gas and oil to coal, coke, cured dry logs, dry peat, and approved smokeless fuels, this flue liner is versatile enough to handle a range of fuel types. This adaptability makes it an ideal choice for both modern and traditional heating systems.
Lifetime Warranty: The 904L Mi-FLEX flue liner comes with a lifetime manufacturer’s warranty when installed with the recommended Screw-FIX accessories. This assurance means that you are investing in a product built for long-term performance and backed by exceptional customer support.
Installation and Maintenance
Proper installation is critical to get the full benefits of your flue liner. Begin the installation from the top of your chimney, ensuring that the arrows indicating gas flow are oriented upwards. This alignment is essential for safe operation and optimal performance. Once installed, routine maintenance is necessary to sustain efficiency. Annual chimney sweeping is recommended, particularly for systems that use solid fuels. Additionally, there are several optional accessories, such as chimney cleaning tools and specialised adapters, available through National Flues. These accessories are specifically designed to complement your flue liner system, ensuring a flawless and secure installation.
Why National Flues?
Choosing National Flues means opting for quality, precision engineering, and outstanding customer service. We have built a reputation for supplying high-quality fireplaces and flues to both the retail and trade sectors. Our products are designed with the end user in mind, providing reliability, efficiency, and a host of technological innovations that set us apart from competitors.
Our experts are always available to provide advice and insights, ensuring that you have all the information needed to make an informed purchase. Whether you are a professional installer or a DIY enthusiast, National Flues is committed to supporting you with detailed installation guidelines, transparent pricing, and a comprehensive range of complementary accessories.
Optional Accessories and Enhancements
While the 904L Mi-FLEX flue liner is a robust solution on its own, consider exploring optional accessories that can further enhance your installation. Items such as Screw-FIX mounting kits, custom-fit adapters, and chimney cleaning tools can all contribute toward a more streamlined and secure setup. These accessories not only simplify the installation process but also extend the overall lifespan and efficiency of your chimney system.
FAQs and Considerations
When choosing a flue liner, it is natural to have questions. Common queries include ensuring compatibility with your current chimney, the nature of the warranty and customer support available, and the availability of accessories to enhance performance. Knowing that the flue liner is HETAS and CE certified provides confidence regarding its reliability and safety. Additionally, our detailed product descriptions and clear installation instructions allow you to see exactly how the product fits into your overall heating system.
Conclusion
The 904L Mi-FLEX 180mm x 1m Cut Length flue liner represents an innovative blend of durability, efficiency, and safety. With a dual-layer design, precision thickness, and advanced seam locking, this flue liner is a top-tier choice for modern chimney systems. With the option to complement your purchase with additional accessories available from National Flues, you are fully supported from installation to maintenance. Our commitment to quality and customer satisfaction means that you can rely on this product to provide a safe, efficient, and long-lasting solution for all your heating needs.
Experience the difference that high-quality materials and expert engineering can make. Enhance your home's safety and efficiency with the 904L Mi-FLEX flue liner, and be confident in every aspect of your chimney system's performance. Ready to secure your reliable chimney solution? Add to cart or call 01670 206 999.
Secure your 904L Mi-FLEX flue liner today for lasting performance and peace of mind – add to cart now!
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