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Single Wall to Twin Wall Increaser Ø 150 - Ø 175

National Flues presents the Single Wall to Twin Wall Increaser Ø 150 - Ø 175, a cutting-edge solution designed for flawless connection between single wall and twin wall flue systems. Ideal for solid fuel, gas, and oil appliances, this universal adaptor ensures optimal performance and safety. Combini... More...
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Now only £25.99
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

At a Glance

  • Universal adaptor that connects single wall flue pipes to twin wall systems
  • Constructed with 304 stainless steel outer and 316 stainless steel inner layers for durability
  • 0.4mm thick metal construction provides both reliability and safety
  • Insulated with high density compressed rockwool (200kg/m3) for excellent thermal resistance
  • HETAS approved, CE marked and compliant with EN1856-1 standards
  • Maintains mandatory 50mm clearance from combustible materials

 

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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 Single Wall to Twin Wall Increaser Ø 150 - Ø 175 is a universal adaptor designed to connect appliance outlets to TWPro flue systems. It ensures a seamless transition from a single wall to twin wall with an effective 25 mm increase. This increaser is suitable for solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, oil and gas boilers, and any solid fuel devices.

Constructed with a 304 grade stainless steel outer and 316 grade stainless steel inner, both layers are fully welded and 0.4mm thick for maximum durability. Insulated with compressed rockwool at a density of 200kg/m3, it provides exceptional thermal resistance. The TWPro is HETAS approved, CE marked, and meets EN1856-1 standards.

Installation is straightforward with a Locking Band, and a safe distance of 50mm from combustibles is mandated.

SKU: 2-150-002

Technical Specifications
DimensionsØ 150 - Ø 175
SKU2-150-002
Inner Material316L Stainless Steel (0.40mm thick)
Outer Material304 Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool, 200kg/m3
CertificationsHETAS, CE, EN1856-1
Safe Distance50mm from combustibles
Installation MethodLocking Band provided
• Begin by verifying that your appliance outlet and flue system meet the dimensional requirements (Ø 150 - Ø 175). • Secure the Single Wall to Twin Wall Increaser onto the appliance outlet using the provided Locking Band to ensure a tight and stable connection. • Confirm that the installation maintains a minimum 50mm clearance from any combustible materials such as wood framing or plasterboard. • If connecting to accessory components such as flue caps or additional insulation systems, ensure that each accessory is compatible with the TWPro flue system. • It is advised to consult a professional if any uncertainty exists regarding the installation process.

The increaser is suitable for solid fuel and gas/oil appliances like woodstoves, gas coal effect fires, and oil and gas boilers.

The outer layer is made of 304 grade stainless steel and the inner layer is made of 316 grade stainless steel, both of which are 0.4mm thick.

The increaser is insulated with compressed rockwool that has a density of 200kg/m3, providing excellent thermal resistance.

Yes, the product is HETAS approved and CE marked, compliant with EN1856-1 standards.

A 50mm distance from any combustible materials (like wood or plasterboard) is required.

The increaser is easily installed by securing it with a Locking Band to ensure a tight, stable connection.

The designation number (EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20) indicates compliance with specific performance and safety standards for chimney products.
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 Single Wall to Twin Wall Increaser Ø 150 - Ø 175

National Flues Ltd Verdict

National Flues highly recommends the Single Wall to Twin Wall Increaser Ø 150 - Ø 175. With exceptional performance and durability, it's a top choice for both retail and trade customers nationwide. Rarely beaten on price and always reliable.

The Single Wall to Twin Wall Increaser Ø 150 - Ø 175 is used for connecting a single wall flue pipe to a twin wall flue system, ensuring a smooth transition and proper airflow.

National Flues is a reputable supplier of fireplaces and flues in the UK, known for competitive pricing, reliable delivery, secure online payments, and availability of trade accounts.

 

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Upgrade your flue system with the Single Wall to Twin Wall Increaser for unmatched quality and performance.

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