Sflue Black (2141105B) - Pipe 300mm - Ø 127
At a Glance
- - High-grade stainless steel construction (304 outer, 316 inner)
- - Suitable for solid fuel, gas, and oil appliances
- - Compressed rockwool insulation for superior thermal performance
- - HETAS approved and CE marked for safety and compliance
- - Easy and secure installation with twist-lock couplers and locking band
- - Backed by a 15-year manufacturing defect warranty and a 2-year paint warranty

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
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
The Sflue Black (2141105B) - Pipe 300mm Ø 127 is a high-quality chimney flue ideal for both solid fuel and gas/oil appliances. Whether you're installing a wood stove, gas coal effect fire, oil, or gas boiler, this flue pipe offers robust performance. Constructed with an outer skin of 304 grade stainless steel and an inner skin of 316 grade stainless steel, both 0.4mm thick, it ensures outstanding durability.
The insulation is compressed rockwool, providing a density of 230kg/m³, encapsulated in twist-lock couplers for added safety. Fully laser welded parts add to its durability and precision. The Sflue system boasts HETAS approval and CE marking, meeting stringent quality standards.
With a required distance to combustibles of 50mm, safe installation is assured. This twin wall insulated chimney flue with an 8-barbed twist lock mechanism secures each part using a Locking Band, making installation a breeze.
SKU: 42-125-012
Technical Specifications | |
---|---|
Model | Sflue Black (2141105B) |
Pipe Length | 300mm |
Diameter | u00d8 127mm |
Inner Material | 316L Stainless Steel - 0.40mm thick |
Outer Material | 304 Stainless Steel - 0.40mm thick |
Insulation | Compressed rockwool (230kg/mu00b3) |
Approval | HETAS / CE |
Distance To Combustibles | 50mm |
Locking Mechanism | 8-barbed twist lock with Locking Band |
Warranty | 15 Years manufacturing defect / 2 Years paint |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Sflue Black (2141105B) - 300mm Pipe Ø 127 is a superb choice for anyone needing a durable and reliable chimney flue. With its HETAS approval and top-grade stainless steel construction, it's built to last. Plus, National Flues offers dependable delivery across the UK and caters to both retail and trade customers.
The Sflue Black (2141105B) - Pipe 300mm Ø 127 is designed for use with solid fuel and gas/oil appliances, offering a reliable and safe chimney flue solution.
National Flues is a trusted supplier of high-quality fireplaces and flues across the UK. Known for competitive prices, reliable delivery, and excellent customer service, they cater to both retail and trade customers.
