Sflue (3119136) - Wall Band Extension 50-100mm
At a Glance
- Robust 304/316L stainless steel construction Safe 50mm clearance from combustibles HETAS and CE approved Designed for solid fuel & gas/oil appliances Enhances stability with reduced wall band fixing spacing

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 (3119136) Wall Band Extension 50-100mm is essential for solid fuel and gas/oil appliances including wood stoves, gas coal effect fires, and oil and gas boilers. The outer skin of the extension is crafted from 304 grade stainless steel, ensuring exceptional durability, while the inner skin is made from 316 grade stainless steel with a thickness of 0.4mm. Encapsulated within the twist-lock couplers, the 230kg/m3 density rockwool insulation provides superior thermal resistance.
Fully laser-welded for enhanced integrity, this component offers a secure fit within your flue system. The extension ensures a mandatory 50mm distance to any combustible materials and complies with stringent safety standards, holding HETAS approval and CE marking under designation EN1856-1 T450 N1 D V2 L50040 G50.
SKU: 22-051
Technical Specifications | |
---|---|
SKU | 22-051 |
Item | Wall Band Extension 50-100mm |
Designation | EN1856-1 T450 N1 D V2 L50040 G(50) |
System | Sflue |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Insulation | 230kg/m3 rockwool within twist-lock couplers |
Fuels | Wood, Oil, Gas, Low sulphur coal |
Approvals | HETAS / CE |
Minimum Clearance | 50mm from combustibles |
Warranty | 15 Years |
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 Wall Band Extension 50-100mm is a high-quality, durable choice for safely extending the distance between your wall band fixings. Its robust construction and HETAS and CE approvals ensure it meets all safety standards. Available for fast, reliable nationwide delivery to both retail and trade customers, this product offers unbeatable value.
The Sflue Wall Band Extension 50-100mm is used to extend the distance between wall band fixings for safe and stable flue installation in solid fuel and gas/oil appliances.
Sflue is known for providing robust, high-quality flue components that ensure safety and efficiency in both residential and commercial settings. Their products comply with the highest standards of performance and reliability.
