DM44 - 200mm ID x 440mm sq. DM support block
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: [email protected]
- Info
- Specs
- Install
- FAQs
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
Technical Specifications | |
---|---|
Product Name | DM44 - 200mm ID x 440mm sq. DM Support Block |
Dimensions | 440mm square, 200mm internal diameter, 100mm high (including lower spigot) |
Material | Natural Pumice |
Approval | HETAS approved, CE marked |
Insulation | Excellent thermal retention with natural pumice |
Compatibility | Suitable for wood, solid fuel, oil, and gas appliances (non-condensing) |
Design Feature | Lower spigot for secure adaptor connection |
Warranty | 10 Years |
Clearance | 0mm on straights; 38mm on offsets in DM System |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. 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. If you find it cheaper within 48 hours, we'll refund the difference.
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National Flues Ltd Verdict
The DM44 Isokern DM Support Block is a top-tier choice for your chimney setup. Perfect for maintaining flue gas temperatures and ensuring safety, this support block is both reliable and efficient. With nationwide delivery and tailored services for both retail and trade customers, National Flues is rarely beaten on price and service.
The DM44 support block is designed to provide superior support and insulation for your chimney, ensuring optimal performance and safety for a range of heating appliances.
National Flues is a trusted supplier of fireplaces and flues across the UK, serving both retail and trade customers with reliable delivery and competitive pricing. Our range includes industry-leading products backed by excellent customer service.
