Sflue (3109512) - Heavy Duty Wall Band - 125 Ø
At a Glance
- - Heavy-duty stainless steel construction (304 outer, 316 inner)
- - 0.40mm thick dual skins for superior durability
- - 8 barbed twist-lock mechanism for secure installation
- - Complies with HETAS and CE safety standards
- - Efficient compressed rockwool insulation (230kg/m3)

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 (3109512) Heavy Duty Wall Band - 125mm Ø is a critical component for ensuring the security and stability of your chimney flue installation. This versatile wall band is suitable for solid fuel, gas, and oil appliances like woodstoves, gas coal effect fires, and boilers. Constructed with a high-quality outer skin of 304-grade stainless steel and an inner skin of 316-grade stainless steel, both at a thickness of 0.4mm, it promises durability and resistance to corrosion.
The insulation between the skins is made of compressed rockwool with a density of 230kg/m3, encapsulated within twist-lock couplers for optimal efficiency. The Sflue system is HETAS approved and CE marked, boasting a designation number of EN1856-1 T450 N1 D V2 L50040 G50, ensuring it meets all safety and performance standards. The installation requires maintaining a 50mm distance from combustible materials, making it a reliable choice for a variety of settings.
The innovative 8 barbed twist-lock mechanism secured with a locking band guarantees a secure assembly, providing peace of mind and robust performance.
SKU: 22-125-052
Technical Specifications | |
---|---|
SKU | 22-125-052 |
Designation | EN1856-1 T450 N1 D V2 L50040 G50 |
Inner Material | 316L Stainless Steel |
Outer Material | 304 Stainless Steel |
Skin Thickness | 0.40mm |
Insulation | Compressed Rockwool (230kg/m3) |
Fuels | Wood, Oil, Gas, Low sulphur coal |
Approvals | HETAS / CE |
Distance To Combustibles | 50mm |
Warranty | 15 Years |
Locking Mechanism | 8 barbed twist-lock with locking band |
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
At National Flues, we proudly present the Sflue (3109512) Heavy Duty Wall Band - 125mm Ø. This robust wall band is a must-have for secure chimney installations, expertly crafted for solid fuel, gas, and oil appliances. Enjoy our reliable nationwide delivery and competitive prices, whether you’re in retail or trade.
The Sflue (3109512) Heavy Duty Wall Band - 125mm Ø is designed to secure and support chimney flue installations for various appliances and ensure safe distances from combustible materials.
National Flues is a leading supplier of fireplaces and flues across the UK, consistently offering competitive prices, reliable delivery, and exceptional service to both retail and trade customers.
