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316L Mi-FLEX 80mm x 1m CUT LENGTH

National Flues presents the 316L Mi-FLEX 80mm x 1m Flexible Flue Liner – a leading choice for homeowners seeking a reliable and efficient chimney relining solution. Manufactured from top-quality 316L stainless steel, this flexible liner is engineered for exceptional performance, accommodating a vari... More...
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At a Glance

  • - Premium 316L stainless steel construction
  • - 0.105mm thick inner and outer skins for superior durability
  • - Innovative Omega-Lock seal design for a secure, leak-free installation
  • - Versatile compatibility with multiple fuels including wood, oil, gas, and low sulphur coal
  • - HETAS approved and CE certified for safety and compliance
  • - Flexible design ideal for relining masonry chimneys
Now only £14.49
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.
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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.

Have Questions?
Phone: 01670 206999
Email: [email protected]

The 316L Mi-FLEX 80mm x 1m Flexible Flue Liner is designed meticulously for relining masonry chimneys. Made from 316L grade stainless steel, both the inner and outer skins are 0.105mm thick, ensuring robust construction and longevity. The flue liner is compatible with various fuel types including gas, oil, coal, coke, cured dry logs, and peat.

Featuring a smooth inner liner and a convoluted outer skin, the Mi-FLEX employs an innovative Omega-Lock seal constructed from a single strip of steel for superior performance and durability. Approved and listed by HETAS as well as CE certified, this flue liner ensures safety and compliance with industry standards. Installation is straightforward but ensure your chimney is swept and the pot is in good condition.

Regular maintenance is essential, especially for chimneys serving solid fuel appliances.

SKU: 35Z-80-1

Technical Specifications
Product Name316L Mi-FLEX 80mm x 1m CUT LENGTH
Material316L Stainless Steel
Inner Thickness0.105mm
Outer Thickness0.105mm
Flue Diameter80mm (3 inch)
Seal DesignOmega-Lock (single strip, folded in four planes)
Fuel CompatibilityWood, Oil, Gas, Low sulphur coal, Coke, Cured dry logs, Peat
CertificationsHETAS Approved, CE Certified
WarrantyLifetime
ManufacturerMi-Flues Ltd
Manufacture MethodSingle Strip, Convoluted Outer with Smooth Inner
Before installation, ensure that your chimney is thoroughly swept and free from obstructions. The liner must be installed from the top of the chimney with the arrows clearly pointing upwards. For an optimal installation, use the appropriate Nose Cone accessory (sold separately) to aid in pulling the liner through the chimney. It is recommended that a professional installer verifies that your chimney pot is in good condition, or, if not using a suspended cowl, that you remove the pot from the stack. Regular maintenance is essential, particularly in chimneys serving solid fuel appliances, which should be inspected and cleaned at least once a year.

It is made from 316L grade stainless steel. Both the inner and outer skins are 0.105mm thick.

Yes, the 316L Mi-FLEX 80mm flue liner is suitable for burning gas, oil, coal, coke, cured dry logs, and peat.

Yes, the 316L Mi-FLEX 80mm flue liner is HETAS approved and also carries CE certification.

The flue liner should always be fitted from the top of the chimney. Ensure the arrows on the liner point upwards and use a Nose Cone (sold separately) to pull the liner through.

Chimneys serving solid fuel appliances should be swept and maintained at least once a year or more frequently as necessary.

Yes, but make sure your chimney pot is in good condition. If not using a suspended cowl, remove the pot from the stack.

The Omega-Lock seal is formed from a single strip of steel bent at 180 degrees, then folded in four planes to ensure a secure and robust construction.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 2nd. 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.

Read our buyers guide for this 316L Mi-FLEX 80mm x 1m CUT LENGTH

National Flues Ltd Verdict

We at National Flues love the 316L Mi-FLEX 80mm Flexible Flue Liner for its high-quality construction and versatility. Perfect for both retail and trade customers, we ensure reliable delivery across the UK.

This flexible flue liner is designed for relining masonry chimneys to safely vent appliances burning multiple types of fuel.

National Flues is a trusted supplier of fireplaces and flues across the UK, committed to providing high-quality products, competitive pricing, and reliable delivery for both retail and trade customers nationwide.

 

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