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TWPro MB - Single Wall to Twin Wall Increaser - Ø 200-Ø 250 (37-200-002)

National Flues presents the TWPro MB - Single Wall to Twin Wall Increaser, a premium chimney flue accessory designed for connecting your Ø200mm single wall pipe systems to larger Ø250mm twin wall insulated chimneys. Read more...
TWPro MB - Single Wall to Twin Wall Increaser - Ø 200-Ø 250
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Now only £38.99
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At a Glance

  • Durable dual stainless steel construction (304 outer, 316L inner), each 0.40mm thick
  • High-temperature black coated finish for a sleek, resilient appearance
  • Compressed rockwool insulation (200kg/m3) for superior heat resistance
  • Designed to connect Ø200mm single wall pipes to Ø250mm twin wall systems
  • HETAS approved and CE marked for safety and quality compliance

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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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.
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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

The TWPro MB - Single Wall to Twin Wall Increaser Ø 200-Ø 250 is an essential component for connecting your solid fuel, gas, or oil appliances to a larger diameter twin wall flue system. Constructed with a robust outer skin made from 304 stainless steel and an equally resilient inner skin made from 316 grade stainless steel, each 0.4mm thick, this increaser is built to last. The increaser is coated in a high-temperature black finish, ensuring it not only performs well but also looks great.

Featuring compressed rockwool insulation with a density of 200kg/m3, it offers excellent heat resistance and safety. All parts are fully welded, guaranteeing durability and reliability. It is HETAS approved and CE marked, meeting crucial safety and quality standards.

The product designation numbers are EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20. Installation is straightforward with the included Locking Band, and maintaining a 50mm distance from combustibles is critical for safety. Choose the TWPro MB Increaser for seamless, safe, and efficient appliance connections.

SKU: 37-200-002

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.

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Technical Specifications
SKU37-200-002
ItemTWPro MB - Single Wall to Twin Wall Increaser - Ø 200-Ø 250
Designation:EN1856-1 T600 N1 W V2 L50040 G50
EN1856-1 T200 P1 W V2 L50040 020
System:TWPro Black
Inner Material:316L Stainless Steel - 0.40mm thick
Outer Material:304 Stainless Steel - 0.40mm thick - High Temperature Black Coated
Fuels:Wood, Oil, Gas, Low sulpher coal
Approvals:HETAS / CE
Distance To Combustibles:50mm
Installation is straightforward with the included Locking Band. Ensure that all connections are securely tightened and that a minimum clearance of 50mm is maintained from any combustible materials. Refer to the manufacturer's installation guidelines for step-by-step instructions to guarantee a safe and compliant setup. Verify that all components are correctly fitted before operating your appliance.

The TWPro MB Increaser is suitable for use with solid fuel, gas, and oil appliances such as woodstoves, gas coal effect fires, and oil or gas boilers.

The outer skin is made from 304 stainless steel, while the inner skin is manufactured from 316 grade stainless steel. Both are 0.4mm thick and fully welded, ensuring durability and strength.

Yes, the TWPro MB Increaser is HETAS approved and CE marked, which certifies its compliance with safety and quality standards.

A minimum distance of 50mm must be maintained from the outside of the flue to any combustible material, such as wood or plasterboard.

The TWPro MB Increaser is secured using the Locking Band supplied with the product. Ensure all connections are tight and the proper clearances are maintained.

The compressed rockwool insulation, with a density of 200kg/m3, provides excellent heat resistance and safety, helping to prevent heat transfer to surrounding materials.

Yes, the TWPro MB Increaser is suitable for a range of applications in both residential and commercial settings, provided it is used with compatible appliances and installed correctly.

 

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