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316L Mi-FLEX 200mm x 30m COIL (35Z-200-30)

National Flues proudly presents the 316L Mi-FLEX 200mm x 30m COIL – a premium, flexible flue liner engineered from high-grade 316L stainless steel. This advanced chimney liner is designed for relining masonry chimneys, combining durability with excellent multi-fuel compatibility. Ideal for homeowners and professionals alike, this product offers unparalleled performance and reliability, setting a new benchmark in chimney solutions.
The price you pay today £1,267.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    Premium 316L stainless steel construction
    Double-skinned design for enhanced durability
    Omega-Lock seam for an airtight, robust seal
    Multi-fuel compatibility: suitable for wood, oil, gas, low sulphur coal, and more
    HETAS approved and CE certified for assured safety
    Lifetime 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 Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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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.

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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 200mm x 30m COIL is a top-of-the-line, double-skinned flexible flue liner designed for relining masonry chimneys. Crafted from 316L grade stainless steel, it features a smooth inner liner and a convoluted outer skin, both 0.105mm thick. This flue liner is built using an innovative Omega-Lock seam, providing an airtight, robust seal.

Approved by HETAS and CE certified, the 316L Mi-FLEX flue liner is suitable for use with gas, oil, coal, coke, cured dry logs, and cured dry peat. Its outstanding construction ensures longevity and reliability, making it an ideal solution for a variety of fuel-burning appliances.

SKU: 35Z-200-30

Technical Specifications
SKU35Z-200-30
Diameter200mm (8 inch)
Length30m (Coil on Drum)
Inner Material316L stainless steel, 0.105mm thick
Outer Material316L stainless steel, 0.105mm thick
SeamOmega-Lock
Fuel CompatibilityWood, Oil, Gas, Low sulphur coal, Coke, Cured dry logs, Cured dry peat
ApprovalsHETAS, CE
ManufacturerMi-Flues Ltd
Manufacture MethodSingle Strip
WarrantyLifetime (with Screw-FIX accessories)
Ensure that the flue liner is installed from the top of the chimney with the directional arrows pointing upwards to indicate the correct gas flow. Begin by having the chimney thoroughly swept and inspected, confirming that the chimney pot and structure are in optimal condition. Use the appropriate Screw-FIX accessories to securely fit the liner, following the manufacturer’s guidelines meticulously. Always adhere to safety protocols and consider professional assistance if you are uncertain of any step in the installation process.

The 316L Mi-FLEX flue liner is made from premium 316L grade stainless steel and features a smooth inner liner and a convoluted outer skin. Its Omega-Lock seam ensures a highly durable, airtight seal.

Yes, this flue liner is suitable for gas, oil, coal, coke, cured dry logs, and cured dry peat, making it a versatile choice for various heating systems.

Always fit the flue liner from the top of the chimney. Make sure the arrows on the liner are pointing upwards to indicate the direction of gas flow. Use a string connected to a Nose Cone to pull the liner down the chimney.

The flue liner is approved by HETAS and is also CE certified, ensuring it meets high standards of safety and reliability.

Both the inner and outer liner are 0.105mm thick, offering robust durability while maintaining flexibility.

It's recommended that chimneys serving solid fuel appliances be swept and maintained at least once a year, or more frequently as necessary.

Ensure the liner will fit down the chimney by testing with a small section, have the chimney swept, and check the condition of your chimney pot. If not using a suspended cowl, remove the pot from the stack.

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