Sflue Black (2117305B) - Cone Top - Ø 127
At a Glance
- - Dual-layer construction: 304 grade stainless steel outer skin and 316 grade stainless steel inner skin (both 0.4mm thick).
- - Superior insulation: High-density compressed rockwool (230kg/m3) for enhanced thermal efficiency.
- - Safety assured: 50mm clearance from combustibles and full compliance with EN1856-1 standards.
- - Easy installation: Integrated Twist Lock couplers with a secure Locking Band design.
- - Versatile applications: Suitable for solid fuel, woodstoves, gas coal effect fires, oil, and gas boilers.

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 Cone Top Ø 127 is an exemplary product designed for use with solid fuel and gas/oil appliances, such as woodstoves, gas coal effect fires, as well as oil and gas boilers. Its construction features a dual-layered design with an outer skin made from 304 grade stainless steel and an inner skin composed of 316 grade stainless steel. Both skins are 0.4mm thick, providing unparalleled durability.
The insulation between these layers is high-density compressed rockwool (230kg/m3), encapsulated within twist-lock couplers for exceptional insulation and safety. Notably, the Sflue system maintains a safe distance of 50mm from any combustible materials. Fully laser welded and meeting EN1856-1 T450 N1 D V2 L50040 G50 standards, the Sflue Black is both HETAS Approved and CE marked, ensuring the highest quality.
This cone top design minimizes flue gas resistance, ideal for efficient performance. All parts are secured using a Locking Band, simplifying installation.
SKU: 42-125-093
Technical Specifications | |
---|---|
SKU | 42-125-093 |
Product Name | Sflue Black (2117305B) - Cone Top u00d8 127 |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Inner Material | 316 Stainless Steel (0.40mm thick) |
Insulation | High-density compressed rockwool (230kg/m3) |
Approvals | HETAS, CE |
Installation Method | Twist Lock couplers with a Locking Band |
Clearance Requirement | 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 Cone Top Ø 127 stands out as a top-tier choice for both solid fuel and gas/oil appliances. With its robust construction and HETAS approval, you can trust its quality and safety. Plus, National Flues ensures reliable delivery nationwide, catering to both retail and trade customers.
The Sflue Black Cone Top Ø 127 is designed to provide efficient flue gas evacuation for solid fuel and gas/oil appliances.
National Flues is a leading supplier of high-quality fireplaces and flues, renowned for unbeatable prices, reliable nationwide delivery, and secure online payments for retail customers. Trade accounts are also available.
