Sflue Black (2119706B) - Increaser - Ø 127-152mm (42-125-002)
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Fast deliveryMonday, November 17th*
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Best PriceCall us to beat any price you found online.
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At a Glance
- Increases flue diameter from Ø127mm to Ø152mm
- Constructed with robust 316L (inner) and 304 (outer) stainless steel – 0.40mm thick
- Compressed rockwool insulation for enhanced thermal efficiency
- HETAS approved and CE marked for trusted safety standards
- Easy installation with 8-barbed twist-lock system and locking band
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 (2119706B) Increaser - Ø 127-152mm is designed for seamless integration into your flue system, equipped to handle a variety of heating appliances including wood stoves, gas coal effect fires, and oil and gas boilers. Constructed with robust materials, the outer skin is made from 304 grade stainless steel while the inner lining consists of 316 grade stainless steel. Both skins are 0.4mm thick.
The increaser includes compressed rockwool insulation with a density of 230kg/m3, encapsulated within twist-lock couplers for enhanced efficiency. Fully laser welded, it ensures utmost durability and performance. This product maintains a safe distance of 50mm between the flue and any combustible materials.
HETAS approved and CE marked, it meets high industry standards (EN1856-1 T450 N1 D V2 L50040 G50). Installation is straightforward with its 8-barbed twist lock system and locking band, ensuring secure and reliable connections.
SKU: 42-125-002
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 | 42-125-002 |
| Product Name | Sflue Black Increaser - Ø 127-152mm |
| Dimensions | Ø127mm to Ø152mm |
| Inner Material | 316L Stainless Steel (0.40mm thick) |
| Outer Material | 304 Stainless Steel (0.40mm thick) |
| Insulation | Compressed Rockwool, 230kg/m3 |
| Approval | HETAS / CE |
| Minimum Clearance | 50mm from combustibles |
| Warranty | 15 Years manufacturing defect, 2 Years paint warranty |
