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DM36 - 150mm ID 360mm sq. DM support block (59-130716)

Enhance your chimney's performance with the Isokern DM36 support block. This premium chimney support block, crafted from natural pumice, is the ideal solution for efficient heat retention and superior flue gas management. Use this Isokern DM36 component for your wood-burning, solid fuel, oil, or gas appliances to ensure optimal safety and performance. Discover quality, durability, and efficiency with the DM36 - your trusted chimney infrastructure partner.
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£87.49
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At a Glance

  • 150mm ID and 360mm square outer dimensions for versatile use
  • Constructed from natural insulating pumice
  • Double wall design optimises heat retention and minimises condensation
  • Quick and simple installation with a 100mm high lower spigot for Adaptor connection
  • HETAS approved and CE marked, ensuring safety and quality
  • Compatible with wood-burning stoves, open fires, cookers, and various solid fuel, oil, or gas appliances

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).

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

The DM36 - 150mm ID 360mm square DM support block is a component of the Isokern DM (Double Module) block system, renowned for its superior quality and efficient design. This high-performance chimney solution maintains optimal flue gas temperatures while preventing heat transference to the outer casing, thanks to its double wall structure. The unique separation of the inner and outer components accommodates thermal movement, significantly reducing the risks of cracking, leaks, or stains.

This robust system is not only simple and quick to install but also versatile, available in three outer casing sizes: DM36, DM44, and DM54. Ideal for use with a range of appliances including stoves, open fires, cookers, and inserts burning wood, solid fuel, oil, or gas (excluding condensing appliances like Biomass & Pellets). Constructed from natural insulating pumice, the DM36 ensures rapid achievement of optimal flue gas temperatures, enhancing the performance of your heating appliance.

Its heat retention properties further minimise condensation and soot build-up, providing a cleaner, safer chimney. The Isokern DM system is HETAS approved and CE marked, bearing the designation number T450 N1 D 3 G(00) and is an excellent choice for reliable and long-lasting installation.

SKU: 59-130716

Technical Specifications
Inner Diameter150mm
Outer Dimension360mm square
Height100mm
Lower Spigot100mm high for Adaptor connection
MaterialNatural Pumice
Designation DM SystemEN1858 - T450 N1 D 3 G(00)
Designation Liner SystemEN1857 - T600 N2 D 3 G
Warranty10 Years
Distance To Combustibles0 on straights; 38mm on offsets on DM System
Before installation, ensure that all components are compatible with your existing chimney system. Begin by verifying that the installation surface is flat and stable. Position the DM36 support block securely, ensuring that the 100mm lower spigot is accessible for adaptor attachment. Follow manufacturer guidelines regarding spacing and connection with other Isokern DM system components. It is crucial to observe all safety warnings, particularly regarding clearance distances from combustibles (0mm on straight runs and 38mm on offsets). If unsure, consult with a qualified installer or refer to the detailed installation manual provided with your purchase.

The Isokern DM support block is used to support and maintain the structure of the DM (Double Module) chimney system. It ensures the efficient operation of your fireplace or stove by regulating flue gas temperatures and preventing heat transference.

The DM36 support block is compatible with a range of appliances including wood-burning 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 Pellets.

The DM36 support block is made from natural pumice, renowned for its excellent insulating properties. This material helps maintain optimal flue gas temperatures and reduces the risk of condensation and soot build-up, thereby enhancing the performance of the heating appliance.

Yes, the DM36 support block is designed for quick and straightforward installation. The system's design allows for seamless connection with other components, simplifying the installation process.

Yes, the Isokern DM support block is HETAS approved and CE marked, ensuring it meets UK and European safety and quality standards. Its designation number is T450 N1 D 3 G(00).

The DM36 support block has an inner diameter of 150mm and a 360mm square outer dimension. It is 100mm high with a lower spigot designed for Adaptor connection.

Yes, the DM36 support block is suitable for both new build projects and renovations. Its efficient design and easy installation make it an excellent choice for a wide range of building applications.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. If you need faster stove or fireplace delivery please give us a call. We can often 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 DM36 - 150mm ID 360mm sq. DM support block buyers guide

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