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Twin Wall to Twin Wall Increaser Ø 150 - Ø 175 (2-150-004)

National Flues presents the Twin Wall to Twin Wall Increaser Ø 150 - Ø 175, an essential upgrade for any chimney system. Engineered for superior performance, this product is ideal for installations that require a reliable chimney flue upgrade. Whether you are outfitting solid fuel, gas, or oil appli Read More...
Now only £99.99
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At a Glance

    Precision engineered for twin wall chimneys - Upgrades diameter from Ø 150 to Ø 175 seamlessly - Constructed with 316L and 304 stainless steel for durability - Insulated with high-density compressed rockwool (200kg/m³) - HETAS Approved and CE Marked for safety and reliability - Compatible with a wide range of appliances including solid fuel and gas/oil systems

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.
  • Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
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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.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The Twin Wall to Twin Wall Increaser Ø 150 - Ø 175 is designed for both solid fuel and gas/oil appliances, such as woodstoves, gas coal effect fires, oil and gas boilers, and any solid fuel appliances. Constructed with precision, it features an outer skin made from 304 grade stainless steel and an inner skin of 316 grade stainless steel, both with a thickness of 0.4mm. To ensure optimal performance and safety, it includes compressed rockwool insulation with a density of 200kg/m³.

All parts are fully welded, ensuring robust durability.This increaser is HETAS Approved and CE marked, assuring you of its high quality and safety standards. It meets the designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20. Installation is straightforward with the use of a Locking Band, and it’s crucial to maintain a distance of 50mm from the flue to any combustible material, such as wood or plasterboard.Opt for this increaser to enhance your chimney flue setup seamlessly, ensuring your heating system operates efficiently and safely.

Its compatibility with a variety of appliances makes it a versatile and essential component in any heating system.

SKU: 2-150-004

Technical Specifications
SKU2-150-004
Diameter Increaseu00d8 150 to u00d8 175
Inner Material316L Stainless Steel (0.40mm)
Outer Material304 Stainless Steel (0.40mm)
InsulationCompressed Rockwool (200kg/mu00b3)
CertificationsHETAS Approved, CE Marked
Designation NumbersEN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20
Minimum Clearance50mm from combustible materials
Installation is straightforward with our Twin Wall to Twin Wall Increaser. Ensure you use the provided Locking Band to secure the increaser properly. Always maintain a minimum clearance of 50mm from any combustible materials such as wood, plasterboard, or insulation to guarantee safety. Before commencing installation, verify that your flue setup complies with local regulations and manufacturer guidelines. If needed, consult a professional installer to ensure optimal performance and safety.

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

The increaser features an outer skin of 304 grade stainless steel and an inner skin of 316 grade stainless steel, both with a thickness of 0.4mm.

The increaser is insulated with compressed rockwool, providing an insulation density of 200kg/m³.

The increaser is secured using a Locking Band. Ensure there is a 50mm clearance from any combustible materials like wood or plasterboard.

Yes, the increaser is HETAS Approved and CE marked, meeting standards EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.

A distance of 50mm should be maintained from the outside of the flue to any combustible materials.

You can purchase the Twin Wall to Twin Wall Increaser Ø 150 - Ø 175 from National Flues, with secure online payments and reliable nationwide delivery.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, May 21st. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also give us a call. We can sometimes 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our Twin Wall to Twin Wall Increaser Ø 150 - Ø 175 buyers guide

Transform your heating efficiency today with our Twin Wall to Twin Wall Increaser – a smart, safe upgrade for your chimney.

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