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Twin Wall to Twin Wall Increaser Ø 100 - Ø 125

National Flues proudly presents the Twin Wall to Twin Wall Increaser Ø 100 - Ø 125, a high-quality accessory designed for efficient transitioning of flue sizes in woodstoves, boilers, and other solid fuel as well as gas/oil appliances. This premium flue system component is engineered for safety, dur... More...
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Now only £58.49
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

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

 

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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]

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
ModelTwin Wall to Twin Wall Increaser Ø 100 - Ø 125
Outer Material304 Stainless Steel (0.40mm thick)
Inner Material316L Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool (200kg/m³)
StandardsEN1856-1, HETAS Approved, CE Marked
Installation Clearance50mm from combustibles
Compatible FuelsWood, Oil, Gas, Low sulphur coal
SystemTWPro
CertificationsEN1856-1 T600 N1 W V2 L50040 G50 / EN1856-1 T200 P1 W V2 L50040 020
Installation is designed to be straightforward. Begin by ensuring a clearance of at least 50mm from any combustible materials such as wood or plasterboard. Assemble the components using the locking bands provided to secure a firm joint between the twin wall sections. It is crucial to confirm that the flue sizes match: the transition from 100mm to 125mm is clearly marked. Always adhere to local building regulations and refer to the installation manual provided with the product. If unsure, consult a qualified installer to guarantee safety and compliance with all relevant standards.

This increaser is suitable for solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, and boilers.

The outer skin is made from 304-grade stainless steel and the inner skin from 316-grade stainless steel, both 0.4mm thick.

The increaser is insulated with compressed rockwool, providing a density of 200kg/m³ for superior thermal insulation.

The TWPro Twin Wall Increaser is HETAS Approved and CE marked, ensuring it meets stringent safety and performance standards.

Installation is simple with the use of a locking band, ensuring secure and safe assembly of the chimney parts.

A distance of 50mm from any combustible material such as wood or plasterboard is required to ensure safety.

This product complies with EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20 designations.
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.

Read our buyers guide for this Twin Wall to Twin Wall Increaser Ø 100 - Ø 125

National Flues Ltd Verdict

The Twin Wall to Twin Wall Increaser Ø 100 - Ø 125 is a top choice for both retail and trade customers. It's versatile, durable, and perfect for various heating appliances. With National Flues, you get reliable delivery and competitive prices nationwide.

The TWPro Twin Wall to Twin Wall Increaser is used to safely and effectively transition between 100mm and 125mm flue sizes for various heating appliances.

National Flues is dedicated to providing high-quality fireplaces and flues across the UK. Known for competitive pricing and reliable delivery, they cater to both retail and trade customers with secure online payment options.

 

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Secure your Twin Wall Increaser today and experience unmatched performance and safety.

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