Twin Wall to Twin Wall Increaser Ø 100 - Ø 125 (2-100-004)
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
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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, on a retail basis. Give us a call if you find it cheaper and want to buy from us.
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 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
| 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 |
