Sflue Black (2119707B) - Increaser - Ø 152-178mm (42-150-002)
-
Fast deliveryMonday, November 17th*
-
Best PriceCall us to beat any price you found online.
-
Secure checkoutCard· Google/Apple Pay· Klarna· Paypal
At a Glance
- Constructed with high-quality 304 and 316L stainless steel
- 4mm thick for optimal performance and durability
- Designed for a range of fuels including wood, oil, gas, and low sulphur coal
- HETAS approved and CE marked, meeting EN1856-1 standards
- Integrated twist-lock couplers for secure connections
- 15-year manufacturing defect warranty with an additional 2-year paint warranty
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: sales@nationalflues.com
- Details
- Specs
- Install/Packs
- FAQs
The Sflue Black Increaser Ø 152-178mm (2119707B) is designed for seamless integration with your chimney flue system. Ideal for use with solid fuel and gas/oil appliances including woodstoves, gas coal effect fires, and oil and gas boilers, this increaser is both durable and efficient. Constructed with high-quality 304 grade stainless steel for the outer skin and 316 grade stainless steel for the inner skin, both 0.4mm thick, it ensures longevity and stability.
The 230kg/m3 density compressed rockwool insulation encapsulated within twist-lock couplers guarantees safety and performance. With full laser-welding technology and an 8 barbed twist lock system, all parts are secured with a locking band, maintaining a 50mm safety distance from any combustible materials. Approved by HETAS and CE-marked, this increaser adheres to EN1856-1 T450 N1 D V2 L50040 G50 standards, making it a top choice for your chimney needs.
SKU: 42-150-002
Delivery Information* +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.
About National Flues Ltd +
We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.
This is us — real advice over the phone, or at the counter, and real stock in our warehouse.
| Technical Specifications | |
|---|---|
| SKU | 42-150-002 |
| Model | 2119707B |
| Size | Ø 152-178mm |
| Inner Material | 316L Stainless Steel (0.40mm thick) |
| Outer Material | 304 Stainless Steel (0.40mm thick) |
| Insulation | 230kg/m3 density compressed rockwool |
| Approval | HETAS / CE |
| Warranty | 15 Years manufacturing, 2 Years paint |
| Installation | Twist-lock couplers with a mandatory 50mm safe distance from combustibles |
