904L Mi-FLEX 100mm x 1m CUT LENGTH
At a Glance
- - Premium 904L grade stainless steel construction
- - Double-skinned flexible design
- - Compatible with multiple fuel types including gas, oil, coal, coke, and smokeless fuels
- - HETAS approved and CE certified for superior safety standards
- - Lifetime manufacturer’s warranty when used with Screw-FIX accessories
- - Easy installation with a clear top-fit design and guiding arrows

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]
- Info
- Specs
- Install
- FAQs
Introducing the 904L Mi-FLEX 100mm x 1m CUT LENGTH Flexible Flue Liner, an exceptional choice for relining masonry chimneys. Crafted from high-end 904L grade stainless steel, this double-skinned liner is durable and resistant to corrosion. The smooth inner lining ensures optimal gas flow efficiency and ease of installation.
This versatile liner is suitable for various fuels, including gas, oil, coal, coke, cured dry logs, cured dry peat, and approved smokeless fuels. Adhering to the highest standards, it is both HETAS and CE approved. Installation is straightforward: sweep your chimney, check your pot condition, and ensure proper passage.
Fit from the top with the arrows pointing upwards for the best results. For solid fuel appliances, frequent maintenance, including annual chimney sweeps, is recommended.
SKU: 36Z-100-1
Technical Specifications | |
---|---|
SKU | 36Z-100-1 |
Size | 100mm x 1m (CUT LENGTH) |
Material | 904L grade stainless steel (0.105mm thick inner & outer) |
Fuel Compatibility | Gas, Oil, Coal, Coke, Cured Dry Logs, Cured Dry Peat, Smokeless Fuels |
Seam Type | Omega-Lock |
Manufacturer | Mi-Flues Ltd |
Approvals | HETAS, CE |
Warranty | Lifetime (with Screw-FIX accessories) |
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
National Flues is thrilled to offer the 904L Mi-FLEX 100mm x 1m CUT LENGTH flexible flue liner. This top-tier liner is perfect for a wide array of fuels and offers excellent performance and durability. Benefit from our nationwide delivery and unbeatable prices for both retail and trade customers.
The 904L Mi-FLEX 100mm x 1m CUT LENGTH Flexible Flue Liner is designed for relining masonry chimneys to improve the efficiency and safety of various fuel-burning appliances.
National Flues is a trusted supplier of high-quality fireplaces and flues in the UK, known for competitive pricing, reliable delivery, and excellent customer service for both retail and trade clients.
