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316L Mi-FLEX 250mm x 1m CUT LENGTH (35Z-250-1)

Discover the 316L Mi-FLEX flue liner from National Flues – a superior flexible flue liner crafted in premium 316L stainless steel. Ideal for relining masonry chimneys, this durable and versatile product offers multi-fuel compatibility and is fully compliant with CE and HETAS safety standards. Enhance your chimney’s performance and longevity with this top-rated, efficient, and reliable solution, and be sure to search for additional accessories like Screw-FIX systems to maximise your investment.
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£66.99
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At a Glance

  • Made from premium 316L stainless steel with double-skinned construction
  • Suitable for multiple fuels including wood, oil, gas, coal, coke, and peat
  • Omega-Lock seal for a secure and tight fit
  • CE approved and HETAS listed, meeting high safety standards
  • Lifetime warranty when used with Screw-FIX accessories

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]

Introducing the 316L Mi-FLEX 250mm x 1m CUT LENGTH flue liner, an exceptional solution for relining masonry chimneys. Crafted from premium 316L grade stainless steel, this double-skinned flexible flue liner is ideal for use with a variety of fuels, including gas, oil, coal, coke, cured dry logs, and peat. The smooth inner liner and convoluted outer skin are both 0.105mm thick, ensuring robustness and durability.

The unique Omega-Lock seal provides a secure and tight fit. CE approved and HETAS listed, this flue liner meets high safety and quality standards. With a lifetime manufacturer's warranty when used with Screw-FIX accessories, you can trust in its long-lasting performance.

SKU: 35Z-250-1

Technical Specifications
SKU35Z-250-1
Product Name316L Mi-FLEX 250mm x 1m CUT LENGTH
Material316L Stainless Steel (inner and outer 0.105mm thick)
Cut Length1m (250mm cut length option available)
Diameter250mm (10 inch)
Fuel CompatibilityWood, Oil, Gas, Coal, Coke, Cured Dry Logs, Cured Dry Peat
ApprovalCE Approved, HETAS Listed
Seal TypeOmega-Lock
ManufactureSingle Strip, by Mi-Flues Ltd
WarrantyLifetime when installed with Screw-FIX accessories
• Always install the flue liner from the top of the chimney with the arrows pointing upwards. • Ensure the chimney is thoroughly cleaned and checked for obstructions before installation. • Verify that the liner will fit down the entire chimney; sweeping and inspecting the chimney helps prevent future blockages. • If your setup does not include a suspended cowl, remember to remove the pot from the stack for a proper fit. • Follow the provided detailed installation guide carefully to ensure safety and optimal performance. For enhanced security and longevity, consider pairing with our recommended Screw-FIX accessories.

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

Yes, the flue liner is CE approved and listed by HETAS.

The flue liner should always be installed from the top of the chimney with the arrows pointing upwards. Detailed installation instructions are provided to ensure proper fitting.

Before installation, ensure the liner will fit down the chimney, sweep the chimney, and check the pot's condition. If not using a suspended cowl, remove the pot from the stack.

Chimneys serving solid fuel appliances should be swept and maintained at least once a year to ensure optimal performance.

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

Both the inner and outer skins of the flue liner are 0.105mm thick, providing exceptional durability and reliability.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 29th. 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 316L Mi-FLEX 250mm x 1m CUT LENGTH buyers guide

Don’t wait – secure your 316L Mi-FLEX flue liner now for a lifetime of reliable chimney performance!

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