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316L Mi-FLEX 180mm x 1m CUT LENGTH (35Z-180-1)

National Flues presents the 316L Mi-FLEX 180mm x 1m flexible flue liner, a top-grade stainless steel solution engineered for longevity and efficiency. Perfect for relining masonry chimneys, this premium product combines robust construction with excellent fuel versatility, making it ideal for wood, oil, gas, and solid fuel applications. Read more...
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At a Glance

  • Constructed from premium 316L stainless steel for optimum durability and corrosion resistance
  • Flexible design with a smooth inner liner for efficient gas flow and a robust convoluted outer skin for added strength
  • Features an Omega-Lock seal to prevent leaks and ensure safe operation
  • Approved by HETAS and CE certified, meeting rigorous UK safety and performance standards
  • Lifetime manufacturer’s warranty when installed with Screw-FIX accessories, providing long-term peace of mind

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

The 316L Mi-FLEX 180mm x 1m flexible flue liner is an exceptional choice for relining masonry chimneys. Made from 316L grade stainless steel, both the inner and outer skins provide durability and corrosion resistance. The inner liner features a smooth construction for optimal gas flow, while the convoluted outer skin adds strength.

Its 0.105mm thick material ensures robustness, and the Omega-Lock seal eliminates any potential leaks. Approved by HETAS and CE certified, this liner is safe and reliable. It is suited for burning gas, oil, coal, coke, dry logs, and dry peat.

For installation, always fit from the top with arrows pointing upward, following our detailed checklist. Maintenance includes annual checks and sweeping for solid fuel usage.

SKU: 35Z-180-1

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.

About National Flues Ltd +

We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.

Technical Specifications
Product Name316L Mi-FLEX 180mm x 1m CUT LENGTH
SKU35Z-180-1
Grade316L Stainless Steel
Dimensions180mm x 1m Cut Length
Thickness0.105mm (inner and outer)
SeamOmega-Lock
CertificationsHETAS approved, CE certified
Fuel CompatibilityWood, Oil, Gas, Coal, Coke, Dry logs, Dry peat
WarrantyLifetime (with Screw-FIX accessories)
ManufacturerMi-Flues Ltd
• Always install from the top of the chimney with the installation arrows pointing upward • Use the recommended Nose Cone (sold separately) to ensure a proper fit during installation • Secure the liner with Screw-FIX accessories to take full advantage of the lifetime warranty • For solid fuel installations, perform an annual check and cleaning to maintain optimal performance • Follow the detailed installation checklist provided to ensure safety and compliance with manufacturer guidelines

The 316L Mi-FLEX flue liner is suitable for burning gas, oil, coal, coke, dry logs, and dry peat.

The flue liner is 0.105mm thick, providing excellent durability and strength.

Yes, the 316L Mi-FLEX flue liner is HETAS approved and CE certified, ensuring it meets high safety and performance standards.

The liner needs to be installed from the top of the chimney, with the arrows pointing upwards. Follow our detailed installation guide for best results.

Yes, it is recommended to use a Nose Cone (order separately) and secure it with a piece of string for the installation process.

For chimneys serving solid fuel appliances, maintenance and sweeping should occur at least once a year, though more frequent checks might be necessary.

When installed with Screw-FIX accessories, the 316L Mi-FLEX flue liner comes with a lifetime manufacturer’s warranty.

 

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