Sflue Black (2141405B) - Adjustable Pipe 500-850mm - Ø 127
At a Glance
- - Telescopic design adjustable from 500mm to 850mm
- - Constructed with 304-grade (outer) and 316-grade (inner) stainless steel, both 0.4mm thick
- - Integrated high-density compressed rockwool insulation (230kg/m3)
- - Innovative 8-barbed twist lock system with a secure Locking Band
- - HETAS approved and CE marked for guaranteed safety and compliance

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 (2141405B) spans 500-850mm and offers telescopic adjustability, ensuring a perfect fit where standard lengths may fall short. Specifically designed for solid fuel and gas/oil appliances, including wood stoves and gas coal effect fires. Constructed with durability in mind, it features an outer skin of 0.4mm thick 304-grade stainless steel and an inner skin of 316-grade stainless steel of the same thickness.
The high-density (230kg/m3) compressed rockwool insulation is encapsulated within the twist-lock couplers, securing the components with precision laser welding. This design maintains a safe distance of 50mm from combustibles, adhering to safety standards. HETAS approval and CE marking guarantee certified quality.
Installation is straightforward with an 8-barbed twist lock and secure Locking Band, keeping a reliable 50mm clearance from combustible materials.
SKU: 42-125-014
Technical Specifications | |
---|---|
SKU | 42-125-014 |
Adjustable Range | 500-850mm |
Diameter | u00d8 127mm |
Outer Material | 304-grade Stainless Steel, 0.4mm thick |
Inner Material | 316-grade Stainless Steel, 0.4mm thick |
Insulation | High-density compressed rockwool (230kg/m3) |
Certifications | HETAS / CE |
Installation | 8-barbed twist lock with Locking Band |
Minimum Clearance | 50mm from combustibles |
Warranty | 15 Years manufacturing defect, 2 Years paint warranty |
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.
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National Flues Ltd Verdict
The Sflue Black Adjustable Pipe is a versatile and high-quality product, perfect for a range of heating applications. At National Flues, we pride ourselves on offering unbeatable prices and reliable delivery nationwide, catering to both retail and trade customers.
The Sflue Black Adjustable Pipe is designed to facilitate the safe and efficient ventilation of solid fuel and gas/oil appliances by accommodating variable length requirements in flue systems.
Sflue is known for producing high-quality, reliable flue components that meet rigorous safety standards. Their products are designed for durability and ease of installation, making them a trusted choice for both residential and commercial applications.
