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Adjustable Pipe 250-350mm Ø 80 (2-80-016)

National Flues presents our Adjustable Twin Wall Insulated Chimney Flue Pipe, a premium solution designed for modern wood stoves, boilers, and gas fireplaces. This durable and versatile flue, crafted from high-grade stainless steel with superior rockwool insulation, meets top industry standards. Explore our range of related chimney system accessories to complete your installation.
The price you pay today £73.99
Give us a call if you find it cheaper and we'll normally price match.

 

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At a Glance

    Adjustable length from 250mm to 350mm for a perfect fit
    Dual-layer construction with 304 and 316 stainless steel
    Premium compressed rockwool insulation (200kg/m³) for optimal thermal performance
    HETAS Approved and CE marked for assured safety and reliability
    Secure, screwless installation using a Locking Band
    Versatile compatibility with wood stoves, gas fireplaces, and boilers
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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.

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]

Our Adjustable Twin Wall Insulated Chimney Flue Pipe, with an adaptable length ranging from 250mm to 350mm, is a versatile solution for your chimney systems. This flue pipe is engineered for a variety of solid fuel and gas/oil appliances including wood stoves, gas fireplaces, and boilers. The outer skin is crafted from 304 grade stainless steel with a thickness of 0.4mm, while the inner skin features 316 grade stainless steel of the same thickness.

This dual-layer construction, coupled with compressed rockwool insulation boasting a density of 200kg/m3, ensures durability and optimal thermal performance.Each component is fully welded, offering a secure, seamless installation. The TWPro Twin Wall Insulated Chimney system, designed for safety and efficiency, maintains a mandatory 50mm clearance from combustible materials. This product is both HETAS Approved and CE marked under designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.Securing the parts together is straightforward, requiring no screws.

Simply use the Locking Band to fix the pipe in place. Whether you are a DIY enthusiast or a professional installer, our adjustable pipe meets the highest standards for chimney flue solutions.

SKU: 2-80-016

Technical Specifications
ModelAdjustable Twin Wall Insulated Chimney Flue Pipe
Adjustable Length250-350 mm
Diameter80 mm
Inner Material316L Stainless Steel (0.40mm thick)
Outer Material304 Stainless Steel (0.40mm thick)
InsulationCompressed Rockwool (200kg/mu00b3)
CertificationsHETAS Approved, CE Marked (EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20)
Clearance50mm from combustible materials
Installation MechanismLocking Band (screwless installation)
Compatible FuelsWood, Oil, Gas, Low sulphur coal
Installation is straightforward: begin by adjusting the pipe length to your required measurement between 250mm and 350mm using the body-soluble ceramic blanket which can be easily trimmed. Ensure proper alignment before using the Locking Band to secure the components together. Maintain a minimum clearance of 50mm from any combustible surfaces. It is advisable to check local building regulations and consult with a professional installer if uncertain. Always inspect the flue components for any signs of wear prior to installation.

The adjustable flue pipe is suitable for solid fuel and gas/oil appliances such as wood stoves, gas coal effect fires, and oil/gas boilers.

The outer skin is made from 304 grade stainless steel, and the inner skin is constructed from 316 grade stainless steel, both with a thickness of 0.4mm.

The pipe features compressed rockwool insulation with a density of 200kg/m3.

Yes, the TWPro system is HETAS Approved and CE marked with designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20.

The parts are secured together using a Locking Band, maintaining a 50mm distance from any combustible materials. No screws are required for the installation.

The insulation has a density of 200kg/m3, ensuring great thermal performance.

A minimum distance of 50mm from the flue's exterior to any combustible material must be maintained.

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