DM54 - 300mm ID x 150mm high offset block (59-129038)
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Fast deliveryMonday, November 17th*
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Best PriceCall us to beat any price you found online.
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At a Glance
- Premium pumice construction for superior insulation
- Optimised to maintain ideal flue gas temperatures
- Versatile compatibility with wood, solid fuel, oil, and gas appliances
- CE marked and HETAS approved for safety and quality
- Streamlined installation for both professionals and DIY enthusiasts
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/Packs
- FAQs
The DM54 - 300mm ID x 150mm high offset block is a premium component of the Isokern Double Module (DM) chimney system, designed to offer superior performance and durability. Engineered with high-quality pumice, a natural insulator, this system rapidly reaches optimal flue gas temperatures while minimising heat transfer to the surrounding casing. This offset block, marked with dimensions of 545 x 635mm, features an 86mm, 30° offset and stands 150mm high.
The DM system comes in three outer casing sizes—DM36, DM44, and DM54—to accommodate various installation needs.Ideal for use with wood, solid fuel, oil, and gas appliances, this product is versatile enough for inserts, stoves, open fires, and cookers, excluding condensing appliances such as Biomass and Pellets. The clever design permits thermal movement, significantly reducing the possibility of cracks, leaks, and staining. Additionally, the Isokern DM system is both HETAS Approved and CE marked, ensuring adherence to stringent quality standards.Installation is streamlined and efficient, making this block a friendly option for both DIY enthusiasts and professionals.
To guarantee best practices, always refer to the provided installation guides.
SKU: 59-129038
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.
This is us — real advice over the phone, or at the counter, and real stock in our warehouse.
| Technical Specifications | |
|---|---|
| Model | DM54 - 300mm ID x 150mm high offset block |
| Dimensions | 545 x 635 mm, 150 mm high, 86 mm offset at 30° |
| Material | Pumice |
| Designations | EN1858 - T450 N1 D 3 G(00), EN1857 - T600 N2 D 3 G |
| Warranty | 10 Years |
| Combustible Distance | 0mm on straights; 38mm on offsets on DM System |