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DM44 - 180mm ID starter flue block (59-130720)

At National Flues, our DM44 - 180mm ID Starter Flue Block is the ideal solution for efficient, reliable chimney systems. This high-quality pumice starter block, a key component of the respected Isokern DM range, offers exceptional insulation and optimal performance. Read more...
Now only £35.99
Give us a call if you find it cheaper and we'll normally price match.
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At a Glance

  • Premium pumice insulation for excellent thermal performance
  • Designed for the Isokern DM block system
  • Quick and straightforward installation
  • Suitable for wood, solid fuel, oil, and gas appliances
  • HETAS approved and CE marked for safety and 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.

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: sales@nationalflues.com

The DM44 - 180mm ID starter flue block is an essential component of the Isokern DM block system, which is celebrated for its double-module design. These blocks are constructed from pumice, a natural insulator, helping to maintain optimal flue gas temperatures while minimizing heat transfer to the outer casing. This dual-wall system not only promotes efficient heating but also reduces the risk of cracking, leaks, and stains.

The DM44 is quick and straightforward to install, making it a convenient choice for stoves, open fires, cookers, and inserts that burn wood, solid fuel, oil, or gas. However, it is not suitable for condensing appliances, including biomass and pellet stoves. Certified by HETAS and CE marked, the Isokern DM system ensures compliance with key industry standards, adding peace of mind to your purchase.

SKU: 59-130720

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.

Technical Specifications
Inner Diameter180mm
Overall Height150mm
MaterialPumice
System CompatibilityIsokern DM block system
Designation (DM System)EN1858 - T450 N1 D 3 G(00)
Designation (Liner System)EN1857 - T600 N2 D 3 G
Warranty10 Years
Clearance To Combustibles0mm on straights; 38mm on offsets on DM System
The DM44 is designed for a straightforward installation process. Follow the manufacturer’s guidelines and ensure that all safety clearances are maintained – notably 0mm on straights and 38mm on offsets when used with the DM System. Clean all surfaces before installation and use the recommended fixings. Always adhere to HETAS guidelines to secure maximum performance and ensure that your chimney system operates safely and efficiently.

The DM44 Starter Flue Block is made from pumice, a natural insulator that offers unique thermal properties for your chimney system.

The DM44 is suitable for use with stoves, open fires, cookers, and inserts burning wood, solid fuel, oil, or gas. It is not suitable for condensing appliances such as biomass and pellet stoves.

Pumice flue blocks provide superior insulation, helping your chimney reach optimal temperatures faster and maintaining those temperatures longer. This efficiency can reduce the risk of condensation and soot build-up.

Yes, the DM44 is designed for simple and quick installation, making it a convenient choice for both professional installers and DIY enthusiasts.

Yes, the Isokern DM system, including the DM44 flue block, is HETAS approved and CE marked, ensuring it meets high safety and performance standards.

The Isokern DM block system is available in three outer casing sizes: DM36, DM44, and DM54, allowing you to choose the best fit for your project.

Thermal movement allows the inner and outer components of the chimney to expand and contract without causing cracks or leaks, thereby maintaining the structural integrity of the chimney over time.

 

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