Sflue Black (3109512B) - Heavy Duty Wall Band - Ø 127
At a Glance
- - Heavy-duty design with 304 grade stainless steel outer skin and 316 grade stainless steel inner skin (0.4mm thick)
- - High-density rockwool insulation (230kg/m³) for superior heat resistance
- - Innovative twist-lock couplers with laser-welded joints
- - Complies with EN1856-1 T450 N1 D V2 L50040 G50 standard
- - HETAS Approved and CE marked, ensuring safety and reliability
- - Maintains a 50mm safe distance from combustible materials

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 (3109512B) - Heavy Duty Wall Band Ø 127 is a critical component designed for optimum support of solid fuel and gas/oil appliances, such as woodstoves, gas coal effect fires, oil, and gas boilers. This heavy-duty wall band is expertly constructed with a 304 grade stainless steel outer skin and a 316 grade stainless steel inner skin, both with a robust 0.4mm thickness. The band is insulated with high-density rockwool (230kg/m3), ensuring exceptional heat resistance and safety.
The innovative design includes twist-lock couplers, and all elements are fully laser welded for extra durability. It maintains a safe 50mm distance from combustibles and is both HETAS Approved and CE marked, meeting the EN1856-1 T450 N1 D V2 L50040 G50 standard. The Sflue system also includes an 8-barbed twist lock mechanism, secured with a locking band, making installation straightforward and reliable.
SKU: 42-125-052
Technical Specifications | |
---|---|
SKU | 42-125-052 |
Model | 3109512B |
Size | u00d8 127 |
Outer Material | 304 Stainless Steel (0.4mm) |
Inner Material | 316 Stainless Steel (0.4mm) |
Insulation | High-density Rockwool (230kg/mu00b3) |
Standard | EN1856-1 T450 N1 D V2 L50040 G50 |
Approvals | HETAS / CE |
Distance To Combustibles | 50mm |
Application | Supports solid fuel, woodstoves, gas coal effect fires, oil and gas boilers |
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 Heavy Duty Wall Band Ø 127 is an exceptional choice for both retail and trade customers. It’s crafted with precision and reliability, ensuring your chimney flue system remains secure. Plus, with our unbeatable prices and reliable nationwide delivery, you can’t go wrong. Highly recommended by National Flues!
The Sflue Black Heavy Duty Wall Band Ø 127 is designed to securely support chimney flue systems for solid fuel and gas/oil appliances, ensuring safe and stable operation.
National Flues is a leading supplier of high-quality fireplaces and flues across the UK, offering competitive prices, reliable delivery, and tailored solutions for both retail and trade customers.
