Single Wall to Twin Wall Increaser Ø 200 - Ø 250
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
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 |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. If you need faster stove or fireplace delivery please give us a call. We can often 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. Mi-Flex offers a lifetime guarantee. 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. If you find it cheaper within 48 hours, we'll refund the difference.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
At National Flues, we believe the Single Wall to Twin Wall Increaser Ø 200 - Ø 250 stands out for its quality and utility. Perfectly engineered for both retail and trade customers, this universal adaptor ensures reliability and durability. Plus, our nationwide delivery and competitively low prices make it an excellent choice for all your flue system needs.
This increaser is used for connecting single wall flue pipes to twin wall flue systems, ensuring a smooth transition and compatibility with various heating appliances.
National Flues is a trusted UK supplier of high-quality fireplaces and flue systems, serving both retail and trade customers nationwide with reliable delivery and competitive pricing.
