DM36 - 150mm ID x 250mm high flue block (59-126369)
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    Fast deliveryWednesday, November 5th*
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    Price matchWe’ll match like-for-like
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                Delivery Information* +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, November 5th. 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.
At a Glance
- Maintains optimal flue gas temperatures with effective insulation
 - Constructed from natural pumice for durability and efficiency
 - HETAS approved and CE marked for guaranteed safety
 - Versatile design suitable for wood, oil, gas, and solid fuels
 - Quick and straightforward installation with comprehensive guides
 
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
                    
- Details
 - Specs
 - Install
 - FAQs
 
The DM36 - 150mm ID x 250mm high flue block is part of the renowned Isokern DM block system, a high-quality solution for your chimney needs. This double-module system excels in maintaining optimal flue gas temperatures while preventing heat transfer to the outer casing, making it a superior choice for longevity and efficiency. Constructed with natural pumice, a unique insulator, the DM36 ensures that the flue gases quickly reach and maintain optimal temperatures, enhancing the performance of your heating appliance.
This property also reduces the risk of condensation and soot build-up, providing a cleaner and more efficient operation. The DM36 is versatile, suitable for use with inserts, stoves, open fires, and cookers burning wood, solid fuel, oil, or gas, excluding condensing appliances like Biomass and Pellets. Adhering to the highest industry standards, the Isokern DM is HETAS approved and CE marked, guaranteeing quality and safety.
Installation is straightforward, supported by comprehensive guides.
SKU: 59-126369
| Technical Specifications | |
|---|---|
| SKU | 59-126369 | 
| Designation DM System | EN1858 - T450 N1 D 3 G(00) | 
| Designation Liner System | EN1857 - T600 N2 D 3 G | 
| Warranty | 10 Years | 
| Material | Natural Pumice | 
| Dimensions | 150mm ID x 250mm high | 
| Distance To Combustibles | 0 on straights; 38mm on offsets on DM System | 
What our experts say!
"The DM36 - 150mm ID x 250mm high flue block is a premium choice for your chimney needs. Reliable, efficient, and easy to install, it’s a top pick for both retail and trade customers. With nationwide delivery and competitive pricing, National Flues is your go-to supplier."
The DM36 - 150mm ID x 250mm high flue block is used to create a robust inner liner within the chimney casing, ensuring optimal thermal insulation and efficiency.
Isokern is renowned for its high-quality chimney systems, utilizing the natural insulating properties of pumice to enhance performance and safety.