Sflue (2188805) - Decorative Ventilated Firestop - 127mm Ø
At a Glance
- - HETAS Approved & CE Marked
- - Dual-layer stainless steel construction (304 outer, 316 inner)
- - Compressed rockwool insulation (230kg/m³) for superior heat resistance
- - Elegant white gloss finish for a sleek appearance
- - 8-barbed twist-lock mechanism for secure installation
- - Designed for both solid fuel and gas/oil appliances
- - Meets EN1856-1 T450 N1 D V2 L50040 G50 designation standards

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 (2188805) Decorative Ventilated Firestop is meticulously designed for use with solid fuel, gas, and oil appliances such as wood stoves, gas coal effect fires, and oil/gas boilers. Constructed with 304-grade stainless steel for the outer skin and 316-grade stainless steel for the inner skin, this firestop guarantees durability and efficiency. The 0.4mm thick layers are insulated with compressed rockwool, offering a density of 230kg/m³.
The insulation is securely encapsulated within twist-lock couplers, ensuring safe and seamless installation. Fully laser welded and HETAS Approved, the Sflue firestop meets the EN1856-1 T450 N1 D V2 L50040 G50 designation standards. Installation is straightforward with an 8-barbed twist-lock mechanism and a locking band, keeping a mandatory distance of 50mm from any combustible materials such as wood or plasterboard.
Finished in a pristine white gloss, this firestop is not only functional but also adds an aesthetically pleasing touch to any installation.
SKU: 22-125-075
Technical Specifications | |
---|---|
SKU | 22-125-075 |
Dimensions | 127mm u00d8 |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool (230kg/mu00b3) |
Installation Mechanism | 8-barbed twist-lock mechanism with locking band |
Approvals | HETAS / CE |
Standards | EN1856-1 T450 N1 D V2 L50040 G50 |
Distance To Combustibles | Minimum 50mm |
Warranty | 15 Years |
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 Decorative Ventilated Firestop is a top-tier product designed for optimal functionality and aesthetic appeal. National Flues offers this high-quality component with unbeatable prices and reliable nationwide delivery. Ideal for both retail and trade customers.
The Sflue Decorative Ventilated Firestop is designed to provide a secure and aesthetic finish where the chimney passes through a ceiling, ensuring safety and efficiency for solid fuel and gas/oil appliances.
SFLue is known for its high-quality chimney and flue products, combining robust materials with innovative design to offer reliable and aesthetically pleasing solutions for both residential and commercial installations.
