Sflue Black (2188706B) - Ventilated Firestop Plate (Solid Fuel) - Ø 152
At a Glance
- HETAS approved and CE marked for uncompromised safety
- Dual-grade stainless steel construction (304 outer / 316 inner) for durability
- Robust 0.40mm construction in both inner and outer layers
- Compressed rockwool insulation (230kg/m³) ensures superior heat containment
- Simple installation with an 8-barbed twist lock system secured by a locking band
- 50mm minimum clearance from combustibles for enhanced safety

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 (2188706B) Ventilated Firestop Plate is a crucial component for safely passing chimneys through upper combustible floors, especially for solid fuel and gas/oil appliances such as wood stoves, gas coal effect fires, and oil and gas boilers. Constructed with durability in mind, the outer skin is made from 304 grade stainless steel, while the inner skin boasts a 316 grade stainless steel build, both at 0.4mm thickness. The robust insulation, made of compressed rockwool at a density of 230kg/m3, is encapsulated within the twist-lock couplers, ensuring that heat remains contained.
The Sflue system is HETAS approved and CE marked with Designation Number EN1856-1 T450 N1 D V2 L50040 G50, which signifies its quality and compliance with safety standards. Installation is straightforward with an 8-barbed twist lock system, secured with a locking band, and it requires a 50mm distance from combustibles to ensure safety.
SKU: 42-150-071
Technical Specifications | |
---|---|
SKU | 42-150-071 |
Designation | EN1856-1 T450 N1 D V2 L50040 G50 |
Materials | 304 Stainless Steel (outer), 316 Stainless Steel (inner) |
Thickness | 0.40mm (each layer) |
Insulation | Compressed Rockwool (230kg/mu00b3) |
Approval | HETAS / CE |
Clearance | 50mm from combustibles |
Installation Method | 8-barbed twist lock system with locking band |
Warranty | 15 Years manufacturing defect warranty, 2 Years paint warranty |
Applicable Fuels | Wood, Oil, Gas, Low sulphur coal |
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 Ventilated Firestop Plate is a top choice for those looking to safely install solid fuel appliances. At National Flues, we guarantee reliable nationwide delivery and cater to both retail and trade customers.
This product is used to safely guide chimneys through upper combustible floors, while ensuring that sections below the floor are enclosed within a non-combustible shaft.
Sflue is known for producing high-quality, reliable chimney and flue components. Their products are designed for durability and safety, meeting stringent industry standards.
