Twin Wall to Twin Wall Increaser Ø 100 - Ø 125 (2-100-004)
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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
- Suitable for solid fuel and gas/oil appliances including woodstoves, gas coal effect fires, and boilers
- Crafted from 304 and 316-grade stainless steel for superior durability
- High-density compressed rockwool insulation (200kg/m³) for excellent thermal properties
- Fully welded construction ensuring robust performance
- HETAS approved and CE marked, compliant with EN1856-1 standards
- Simple, secure installation with locking bands and a 50mm clearance requirement from combustibles
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 TWPro Twin Wall to Twin Wall Increaser Ø 100 - Ø 125 is an essential component for your solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, and boilers. Crafted with precision, the outer and inner skins are constructed from 304 and 316-grade stainless steel respectively, both 0.4mm thick. The insulation features compressed rockwool with a high density of 200kg/m³, offering superior thermal protection.
Fully welded parts ensure durability and performance. Safety is prioritized with a 50mm distance requirement from combustibles. HETAS approved and CE marked, this increaser adheres to EN1856-1 standards.
Installation is straightforward with locking bands, ensuring a secure and safe setup.
SKU: 2-100-004
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 | |
|---|---|
| Model | Twin Wall to Twin Wall Increaser Ø 100 - Ø 125 |
| Outer Material | 304 Stainless Steel (0.40mm thick) |
| Inner Material | 316L Stainless Steel (0.40mm thick) |
| Insulation | Compressed Rockwool (200kg/m³) |
| Standards | EN1856-1, HETAS Approved, CE Marked |
| Installation Clearance | 50mm from combustibles |
| Compatible Fuels | Wood, Oil, Gas, Low sulphur coal |
| System | TWPro |
| Certifications | EN1856-1 T600 N1 W V2 L50040 G50 / EN1856-1 T200 P1 W V2 L50040 020 |