Sflue Black (2141206B) - Adjustable Pipe 350-530mm - Ø 152
At a Glance
- Telescopic design offering adjustable lengths from 350mm to 530mm
- Constructed with 304-grade stainless steel exterior and 316-grade stainless steel interior (0.40mm thick each)
- Integrated compressed rockwool insulation (230kg/m3) for enhanced thermal efficiency
- HETAS approved and CE marked ensuring safety and compliance
- Secure 8-barb twist-lock design with additional locking bands for robust connections
- Suitable for a variety of heating systems including wood, oil, gas, and low sulphur coal
- Maintains a 50mm clearance from combustibles for added safety

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 Adjustable Pipe (2141206B) is designed for adaptability and durability, flawlessly accommodating a range of heating appliances including solid fuel, gas, and oil systems. Crafted with precision, its 304-grade stainless steel outer skin and 316-grade stainless steel inner skin both measure 0.4mm thick, ensuring robust performance and longevity. The integrated compressed rockwool insulation boasts a density of 230kg/m3, effectively encapsulated within twist-lock couplers for solid, secure connections.
With a 50mm minimum clearance to combustibles, it meets HETAS approval and CE marking standards. Sflue’s 8-barb twist-lock design with additional lock bands makes installation straightforward and reliable, ensuring safe operation and superior efficiency.
SKU: 42-150-015
Technical Specifications | |
---|---|
SKU | 42-150-015 |
Adjustable Length | 350-530mm |
Diameter | u00d8 152mm |
Inner Material | 316L Stainless Steel (0.40mm) |
Outer Material | 304 Stainless Steel (0.40mm) |
Insulation | Compressed Rockwool (230kg/m3) |
Certifications | HETAS, CE |
Minimum Clearance | 50mm |
Design | 8-Barb 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 Tuesday, April 8th. 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.
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National Flues Ltd Verdict
The Sflue Black Adjustable Pipe (2141206B) is a standout product in our range. Its flexibility and durability ensure top-notch performance. We're proud to deliver this product nationwide, catering to both retail and trade customers.
The Sflue Black Adjustable Pipe is designed to connect and adapt to various solid fuel, gas, and oil heating appliances, providing a safe and efficient flue system.
Sflue is renowned for its high-quality flue systems, offering reliable and innovative solutions for both domestic and commercial heating applications.
