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DM54 - 345mm ID x 150mm high starter flue block (59-129093)

National Flues proudly offers the DM54 starter flue block, a high-performance chimney component designed for fireplaces, stoves, and open fires. As an integral part of the Isokern DM chimney system, this robust unit, crafted from natural pumice, delivers exceptional insulation and safety. Read more...
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At a Glance

  • 345mm internal diameter and 150mm height for optimal flue initiation
  • Constructed from natural, insulating pumice
  • Rapid temperature attainment for consistent performance
  • HETAS approved and CE marked for safety and quality
  • Versatile compatibility: supports wood, solid fuel, oil, and gas (non-condensing)
  • Reduces condensation and soot build-up
  • Easy installation for professionals and DIY enthusiasts
  • Backed by a 10-year warranty

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 DM54 - 345mm ID x 150mm high starter flue block is an exceptional component in the Isokern DM chimney system. This double-module (DM) system is designed to maintain optimum flue gas temperatures while preventing heat transference to the outer casing, making it a high-quality system chimney. Featuring a pumice construction, known for its natural insulating properties, the DM54 flue block ensures rapid temperature attainment and consistent performance.

It keeps the chimney warm longer, aiding in reducing condensation and soot build-up. Available in three outer casing sizes - DM36, DM44, and DM54, this system is compatible with inserts, stoves, open fires, and cookers using wood, solid fuel, oil, or gas (excluding condensing appliances such as Biomass and Pellets). The system is HETAS approved and CE marked, ensuring safety and compliance with international standards.

Easy to install, the DM54 starter flue block is a reliable choice for both professionals and DIY enthusiasts.

SKU: 59-129093

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
Internal Diameter345mm
Height150mm
MaterialPumice
Warranty10 Years
System CompatibilityDM36, DM44, DM54
CertificationsHETAS approved, CE marked
UseFor inserts, stoves, open fires, cookers (wood, solid fuel, oil, gas)
The DM54 starter flue block is engineered for straightforward installation. Follow the manufacturer’s guidelines closely: ensure correct clearances (0mm on straights and 38mm on offsets for the DM System when near combustibles) and secure the block in place to avoid any misalignment. It is essential that installation complies with local building regulations and HETAS recommendations. Whether you’re a professional installer or a dedicated DIY enthusiast, verify the component's proper placement within your Isokern DM chimney system to guarantee optimal performance and safety. Additionally, double-check all seals and connections for a secure fit to prevent heat loss and potential feedback into surrounding structures.

The DM54 starter flue block is used to initiate the flue system in a chimney, ensuring optimal performance and safety for a variety of heating appliances.

The DM54 is suitable for wood, solid fuel, oil, and gas appliances, but not for condensing appliances such as Biomass and Pellets.

Pumice is a natural insulator, allowing the chimney to quickly reach and maintain optimal temperatures, which aids in performance and reduces condensation and soot buildup.

Yes, the DM54 flue block is designed for simple and quick installation, making it suitable for both professionals and DIY enthusiasts.

The DM54 flue block is HETAS approved and CE marked, ensuring it meets high safety and quality standards.

The DM flue block range is available in three outer casing sizes: DM36, DM44, and DM54.

Yes, the DM54 flue block is compatible with open fires, as well as inserts, stoves, and cookers.

 

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