Sflue Black (2141106B) - Pipe 300mm - Ø 152
At a Glance
- - Premium twin wall insulated design for superior safety and performance
- - Robust construction with 304 and 316L stainless steel for durability
- - 0.4mm thick walls engineered for optimal strength
- - Integrated twist-lock mechanism with secure Locking Band for a firm assembly
- - HETAS approved and CE marked, ensuring industry compliance
- - Maintains a 50mm clearance from combustibles for enhanced protection

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: sales@nationalflues.com
- Info
- Specs
- Install
- FAQs
The Sflue Black 300mm Pipe (Ø 152) is a premium Twin Wall Insulated Chimney Flue designed for utmost safety and efficiency. Crafted for use with solid fuel and gas/oil appliances, this pipe is ideal for woodstoves, gas coal effect fires, and boilers. Built with a 304 grade stainless steel outer skin and a 316 grade stainless steel inner skin, both at 0.4mm thickness, it ensures durability and longevity.
The insulation comprises compressed rockwool with a density of 230kg/m³, neatly encapsulated within the twist-lock couplers for added security. The Sflue system features an 8-barbed twist lock mechanism, coupled with laser-welded parts to ensure a secure fit. Maintaining a safe distance of 50mm from combustibles is crucial for optimal safety.
As an added assurance of quality, the Sflue is both HETAS approved and CE marked under the designation number EN1856-1 T450 N1 D V2 L50040 G50. Installation is simplified with an included Locking Band, making this product an easy and reliable choice for any professional setup.
SKU: 42-150-012
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, April 7th. 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
At National Flues, we believe the Sflue Black 300mm Pipe (Ø 152) is an exceptional choice for various solid fuel and gas/oil appliances. With robust construction, HETAS approval, and reliable performance, it's a top pick for both retail and trade customers. Add in our nationwide delivery service, and you've got a winning combination.
The Sflue Black 300mm Pipe is designed as an essential component for installing safe and efficient chimney flue systems in solid fuel and gas/oil appliances.
Sflue is a renowned brand in the chimney flue industry, known for its high-quality materials, rigorous safety approvals, and innovative design features, ensuring reliable and efficient performance.
