Single Wall to Twin Wall Increaser Ø 200 - Ø 250 (2-200-002)
At a Glance
- Seamless connection between single wall and twin wall flue systems
Robust stainless steel construction (304 outer, 316L inner)
High-density 200kg/m3 rockwool insulation for enhanced thermal efficiency
HETAS approved and CE marked for safety
Easy installation with included locking band
Compatible with wood, oil, gas, and low sulphur coal appliances
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 Single Wall to Twin Wall Increaser Ø 200 - Ø 250 is an essential component for connecting single wall to twin wall flue systems, ideal for various solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, oil and gas boilers. Constructed with a robust outer skin of 304 grade stainless steel and an inner lining of 316 grade stainless steel, each 0.4mm thick, it ensures long-lasting performance. The insulation comprises densely packed (200kg/m3) compressed rockwool, providing superior thermal efficiency and safety.
All parts are meticulously fully welded. With a distance requirement of 50mm to combustibles, this increaser meets the highest safety standards. It's HETAS approved and CE marked, complying with EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20 designations.
Easy installation is guaranteed with the included locking band, making this adaptor a practical, reliable addition to your chimney flue system.
SKU: 2-200-002
| Technical Specifications | |
|---|---|
| SKU | 2-200-002 |
| Product Name | Single Wall to Twin Wall Increaser u00d8 200 - u00d8 250 |
| Outer Material | 304 Stainless Steel - 0.40mm thick |
| Inner Material | 316L Stainless Steel - 0.40mm thick |
| Insulation | Densely packed compressed rockwool (200kg/m3) |
| Approvals | HETAS / CE |
| Compliance | EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20 |
| Compatible Appliances | Wood, Oil, Gas, Low sulphur coal |
| Distance To Combustibles | 50mm |
| Accessories Included | Locking band |
