Sflue Black (2188705B) - Ventilated Firestop Plate (Solid Fuel) - Ø 127
At a Glance
- - Robust 0.4mm dual stainless steel construction (304 & 316L)
- - Ventilated design ensuring a 50mm safe clearance from combustible materials
- - HETAS approved and CE marked for high safety standards
- - Quick and secure 8-barbed twist-lock Twin Wall installation
- - Versatile compatibility with solid fuel, wood, oil, and gas appliances

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 (2188705B) - Ventilated Firestop Plate for solid fuel appliances offers robust construction and superior performance for your chimney needs. Designed for compatibility with wood stoves, gas, oil appliances, and more, this firestop plate ensures safety where your chimney passes through upper combustible floors. Constructed with a combination of 304 grade and 316 grade stainless steel, both with a thickness of 0.4mm, the plate is insulated with high-density compressed rockwool encapsulated in twist-lock couplers.
The precise 50mm distance to combustibles requirement is supported by full laser welding, delivering durability and dependability. This HETAS-approved and CE-marked product, identified by Designation Number EN1856-1 T450 N1 D V2 L50040 G50, easily locks into place with an 8-barbed twist-lock Twin Wall system, ensuring secure and easy installation. Ideal for trade professionals and DIY enthusiasts alike, it offers quality assurance at a competitive price.
SKU: 42-125-071
Technical Specifications | |
---|---|
Model | Sflue Black (2188705B) |
Designation | EN1856-1 T450 N1 D V2 L50040 G50 |
Outer Material | 304 Stainless Steel - 0.40mm |
Inner Material | 316L Stainless Steel - 0.40mm |
Fuel Compatibility | Wood, Oil, Gas, Low sulphur coal |
Distance To Combustibles | 50mm |
Approval | HETAS / CE |
Locking System | 8-barbed Twist-lock Twin Wall |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The Sflue Black Ventilated Firestop Plate is a reliable and essential component for safe chimney installations. With our nationwide delivery and support for both retail and trade customers, National Flues ensures you get the best quality at competitive prices.
The Sflue Black Ventilated Firestop Plate is designed to ensure safe passage of chimneys through combustible floors, providing essential protection for solid fuel, gas, and oil appliances.
Sflue is known for its high-quality, reliable chimney and flue solutions, combining durability with ease of installation to meet various firestopping needs.
