We use cookies to ensure a smooth, secure, and ever-improving experience on our website. By continuing to browse, you agree to our use of cookies as detailed in our Cookie Policy. Enjoy your visit and let us now if you need any help!
Cookie Preferences
We use different types of cookies for various purposes. Please select which you allow:
904L Mi-FLEX 200mm x 30m COIL (36Z-200-30)
The 904L Mi-FLEX 200mm x 30m COIL from National Flues is a premier stainless steel flue liner, engineered for excellence in chimney relining. Ideal for residential and trade installations, this multi-fuel, robust solution is HETAS listed and CE approved, ensuring both safety and performance. Its superior design, featuring a double-skinned construction, makes it the ultimate choice for enhancing chimney efficiency and longevity in a variety of applications.
Hover to Zoom / Click for Gallery
In Stock
£2,705.99
with free delivery
Give us a call if you find it cheaper and we'll try to price match.
At a Glance
Premium 904L stainless steel construction
Double-skinned design with smooth inner and convoluted outer layers
Suitable for relining masonry chimneys with a 200mm diameter and 30m length
Lifetime warranty when installed with Screw-FIX accessories
HETAS listed and CE approved for multi-fuel performance
×
Email Product
Enter your email address to send the product details:
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 200mm x 30m COIL is the ultimate solution for relining masonry chimneys. Constructed from premium 904L grade stainless steel, this double-skinned flexible flue liner guarantees longevity and resilience. The smooth inner lining and convoluted outer skin, both 0.105mm thick, are expertly designed to withstand the rigours of burning gas, oil, coal, coke, cured dry logs, cured dry peat, and approved smokeless fuels.
It features an innovative quattrolock seal, achieved by bending a single strip of steel at 180 degrees and folding it in four planes. Approved and listed by HETAS and CE, this flue liner embodies top-tier safety and quality standards. Installation is straightforward but does require careful preparation, including ensuring chimney suitability, sweeping, and securing pot condition.
Maintenance is crucial; for solid fuel appliances, annual chimney sweeps are recommended.
Before installation, ensure your chimney is suitable for use with a relining system. It is essential to perform a thorough chimney sweep and verify the condition of the pot. The liner must be installed from the top down, with installation arrows pointing upward to guarantee proper flow and efficiency. Caution: Always adhere to manufacturer installation instructions and local building regulations. For solid fuel appliances, annual inspections and sweeps are recommended to maintain the efficiency and safety of the system.
The 904L Mi-FLEX Flue Liner is suitable for burning gas, oil, coal, coke, cured dry logs, cured dry peat, and approved smokeless fuels.
Made from 904L grade stainless steel with a smooth inner and convoluted outer skin, the liner boasts exceptional durability and is backed by a lifetime manufacturer's warranty.
Yes, though it requires careful preparation such as chimney suitability checks, sweeping, and ensuring pot condition. Always fit the liner from the top with arrows pointing upwards.
The 904L Mi-FLEX Flue Liner is both HETAS listed and CE approved, meeting stringent safety and quality standards.
Yes, it is recommended that chimneys serving solid fuel appliances be swept at least once a year, or more frequently if necessary.
Both the inner and outer skins of the flue liner are 0.105mm thick, ensuring robust performance and longevity.
It is specifically designed for relining within masonry chimneys. It is essential to check chimney suitability before installation.
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 200mm x 30m COIL buyers guide
Introduction
When it comes to maintaining the efficiency and safety of your heating system, the importance of a high-quality flue liner cannot be overstated. The 904L Mi-FLEX 200mm x 30m COIL is designed to meet the needs of both residential homeowners and trade professionals with its robust construction and innovative design features. In this guide, we will explore every aspect of this flue liner to help you make an informed decision.
Product Overview
The 904L Mi-FLEX Coil is manufactured from premium 904L grade stainless steel, a material known for its exceptional durability and resistance to corrosion. With a double-skinned design that incorporates a smooth inner skin and a convoluted outer layer, this liner is engineered to withstand the rigours of various fuel types, including gas, oil, coal, coke, cured dry logs, and more. It is not only flexible and efficient but also ensures a secure and fully compliant installation scenario.
Key Features and Benefits
Durability:
- Constructed from 904L stainless steel, this product is built to last even under the harshest conditions. The high-quality material ensures that the liner remains resistant to corrosive conditions, which is critical in maintaining optimal flue performance over the years.
Innovative Construction:
- The double-skinned design enhances both safety and thermal efficiency. With an internal smooth lining that minimises creosote build-up and an externally convoluted surface that increases structural integrity, this liner is optimized for both functionality and longevity.
Multi-Fuel Compatibility:
- Whether you are using gas, oil, or traditional fuels like coal and coke, this flue liner is designed to accommodate a wide range of options. This versatility makes it a preferred choice for properties with diverse heating systems.
Lifetime Warranty:
- Enjoy peace of mind with a lifetime warranty when installed with Screw-FIX accessories. This commitment to quality ensures you have a reliable product that will protect your property for years to come.
Certifications:
- Being HETAS listed and CE approved assures you that every installation meets the highest standards of safety and performance. These certifications provide an extra layer of assurance regarding product quality and its compliance with industry standards.
Installation Considerations
Before installation, it is crucial to ensure that your chimney is in a suitable condition for relining. A thorough inspection should be carried out to verify that the chimney is free from obstructions and that all structural aspects are intact. Professional installation is recommended for those unfamiliar with the process; however, experienced DIY enthusiasts can also install the liner by following the detailed guidelines provided. Remember, correct installation is key to achieving optimal performance and safety.
Preparation Steps:
- Inspect and clean the chimney thoroughly to remove any soot, debris, or blockages.
- Assess the chimney pot condition to ensure it can support the new liner.
- Follow the manufacturer’s installation guidelines, paying close attention to the directional arrows on the liner that point upwards.
- Consider using additional Screw-FIX accessories available through National Flues to enhance the installation process.
Addressing Common Objections
Cost Considerations:
While the initial investment in a high-quality flue liner might seem significant, it is important to consider the long-term benefits. The durability, efficiency, and safety features of the 904L Mi-FLEX Coil mean fewer maintenance issues and potentially lower insurance premiums. Over time, the cost savings, not to mention the enhanced safety of your home, make it a very worthwhile investment.
Ease of Installation:
Some may worry that a seemingly complex installation process could be a deterrent. However, with clear instructions and the option for professional installation, the process is straightforward. Additionally, the product’s design prioritises ease of use, ensuring that even first-time installers can achieve a secure and efficient setup.
Future Proofing:
Investing in a product that comes with a lifetime warranty means you are well-protected against future issues. This not only offers financial protection but also contributes significantly to the overall safety and longevity of your chimney system.
Why Choose National Flues?
National Flues is renowned for its commitment to quality and customer satisfaction. We offer competitive pricing, reliable nationwide delivery, and a secure online sales process. Choosing the 904L Mi-FLEX Coil means you are opting for a product that has been carefully designed and manufactured to meet the highest standards. Our expertise in fireplaces and flues ensures that you receive unparalleled support and quality in every purchase.
Final Thoughts
The 904L Mi-FLEX 200mm x 30m COIL is more than just a flue liner; it is a long-term investment in the safety and efficiency of your home’s heating system. With its innovative design, superior materials, and robust warranty, it stands out as an essential component for anyone looking to enhance their chimney’s performance. Whether you are a homeowner seeking to update your living space or a trade professional committed to offering the best solutions, this product is tailored to meet your needs.
Elevate your home’s heating efficiency and quality with the 904L Mi-FLEX Coil – a product that not only meets but exceeds expectations. Buy now or call 01670 206 999.
Secure your 904L Mi-FLEX Coil now for a lifetime of safe and efficient heating.
×
Select Product Options
×
Product added
Would you like to keep shopping or head to checkout?
