Twin Wall to Twin Wall Increaser Ø 200 - Ø 250
At a Glance
- Safely increases flue diameter from Ø200 to Ø250 mm
- HETAS approved and CE-marked
- Durable stainless steel construction (304 outer, 316L inner)
- High-density compressed rockwool insulation (200kg/m³)
- Suitable for solid fuel, oil, and gas appliances
- Easy installation with a secure 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
- Info
- Specs
- Install
- FAQs
The Twin Wall to Twin Wall Increaser (Ø 200 - Ø 250) is a premium quality component designed to safely and effectively increase the diameter of your chimney flue system. Suitable for use with solid fuel, gas, and oil appliances, this increaser can enhance the performance of woodstoves, gas coal effect fires, oil and gas boilers, and other solid fuel units. Constructed with a robust 304-grade stainless steel outer skin and a 316-grade stainless steel inner skin, both 0.4mm thick, this component ensures durability and resilience.
The insulation comprises high-density compressed rockwool (200kg/m3), providing excellent thermal protection. All parts are fully welded for superior strength. With a 50mm clearance from combustibles, you can rest assured that your installation is both safe and compliant.
The TWPro system is HETAS-approved and CE-marked, adhering to EN1856-1 standards. Installation is a breeze with the use of a Locking Band to secure the parts together.
SKU: 2-200-004
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
The Twin Wall to Twin Wall Increaser (Ø 200 - Ø 250) is a top choice for anyone needing to step up their flue size safely and efficiently. With HETAS approval and impeccable construction, this increaser is perfect for retail and trade customers alike. And with National Flues, you can always count on reliable delivery across the UK.
The Twin Wall to Twin Wall Increaser is designed to increase the diameter of your chimney flue system safely and efficiently, ensuring optimal performance for various heating appliances.
National Flues is a trusted supplier of fireplaces and flues, serving both retail and trade customers across the UK. Known for competitive pricing and reliable delivery, National Flues ensures your fireplace and flue needs are met with quality and efficiency.
