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DM44 - 200mm ID x 440mm sq. DM support block (59-130730)

Discover the premium DM44 support block from National Flues – a top-quality chimney accessory expertly crafted for the Isokern DM system. Made from natural pumice, this support block delivers impressive thermal insulation and reliable performance. Read more...
Now only £115.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.
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At a Glance

  • Superior insulation using natural pumice
  • Engineered for the Isokern DM double module system
  • Maintains optimum flue gas temperatures
  • HETAS approved and CE marked for safety
  • Versatile for wood, solid fuel, oil, and gas appliances (excluding condensing models)
  • Includes a lower spigot for secure adaptor connection
  • 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 DM44 - 200mm ID x 440mm Square Isokern DM Support Block is an essential component of the renowned double module (DM) system, delivering superior performance and reliability. This high-quality system chimney effectively maintains flue gas temperatures while reducing heat transfer to the outer casing, which prevents cracking, leaking, or staining. Made from natural pumice, known for its exceptional insulating properties, the DM44 allows flue gases to reach optimal temperature swiftly, enhancing your appliance's performance.

It also retains warmth longer, minimizing condensation and soot buildup. Suitable for various heating appliances, including wood, solid fuel, oil, and gas (excluding condensing appliances like Biomass & Pellets), the DM44 is versatile and user-friendly. It holds HETAS approval and CE marking, ensuring compliance with the highest safety standards.

SKU: 59-130730

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
Product NameDM44 - 200mm ID x 440mm sq. DM Support Block
Dimensions440mm square, 200mm internal diameter, 100mm high (including lower spigot)
MaterialNatural Pumice
ApprovalHETAS approved, CE marked
InsulationExcellent thermal retention with natural pumice
CompatibilitySuitable for wood, solid fuel, oil, and gas appliances (non-condensing)
Design FeatureLower spigot for secure adaptor connection
Warranty10 Years
Clearance0mm on straights; 38mm on offsets in DM System
• Ensure all components and accessories are available before starting installation. Refer to the detailed installation guide provided with the product. • Verify the measurements and clearances (0mm for straights and 38mm for offsets on DM System) to maintain safety standards. • Position the DM44 support block carefully to align the lower spigot with the adaptor connection, ensuring a stable and secure installation. • Follow all safety instructions and regulations as specified in the installation manual. Consider consulting a qualified professional if you are uncertain about any part of the process. • Note: Regular maintenance and inspections are advised to uphold performance and safety over time.

The DM44 support block is suitable for inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas. It is not recommended for condensing appliances, including Biomass & Pellets.

The Isokern DM system offers superior insulation, maintaining flue gas temperatures and reducing heat transfer to the outer casing. This minimizes the risk of cracking, leaking, or staining and enhances appliance performance.

Pumice is a natural insulator, helping flue gases quickly reach optimal temperatures and retaining warmth longer to reduce condensation and soot build-up, thus improving the overall performance of the heating appliance.

Yes, the DM44 support block is designed for straightforward and quick installation. Detailed installation instructions are available in the provided guides.

The Isokern DM support block is HETAS approved and CE marked, ensuring it meets the highest safety and quality standards.

The DM44 support block measures 440mm square with a 200mm internal diameter. It features a lower spigot for adaptor connection and stands 100mm high.

Yes, by maintaining flue gas temperatures and reducing heat transference, the DM44 support block helps prevent cracking and leaking, which in turn reduces the risk of chimney staining.

 

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