316L Mi-FLEX 100mm x 1m CUT LENGTH
At a Glance
- Premium 316L stainless steel construction for long-lasting durability
- Double-skinned design with smooth inner and convoluted outer surfaces
- Secure Omega-Lock seal for a reliable fit
- Compatible with a wide range of fuel types including gas, oil, coal, coke, and dry logs
- HETAS and CE approved for safety and performance
- 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: sales@nationalflues.com
- Info
- Specs
- Install
- FAQs
The 316L Mi-FLEX 100mm x 1m CUT LENGTH flue liner is an exceptional choice for relining your masonry chimney. Crafted from premium 316L grade stainless steel, this double-skinned flexible liner features a smooth inner surface and a convoluted outer skin, both 0.105mm thick. The unique Omega-Lock seal ensures maximum durability and reliability.
It's suitable for use with various fuels including gas, oil, coal, coke, cured dry logs, and cured dry peat. Our flue liners are HETAS and CE approved, ensuring top-tier performance and safety. Installation is straightforward, with clear guidelines to ensure a snug fit.
Regular maintenance, such as sweeping your chimney at least once a year, will keep your flue liner in optimal condition.
SKU: 35Z-100-1
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.
National Flues Ltd Verdict
The 316L Mi-FLEX 100mm x 1m Cut Length is a top-quality flexible flue liner that's perfect for any fuel type. We rarely get beaten on price and deliver nationwide, serving both retail and trade customers.
The 316L Mi-FLEX 100mm x 1m cut length flexible flue liner is designed for relining masonry chimneys to make them safe and efficient when used with various fuel types.
National Flues is a leading UK supplier of fireplaces and flues, offering reliable delivery and competitive prices to both retail and trade customers nationwide.
