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Retro Fit Base Support - Ø 150 (15-150-160)

National Flues presents the Retro Fit Base Support - 150mm, a premium accessory for your chimney installation needs. Designed for solid fuel, gas, and oil appliances, this adaptable chimney support is ideal for woodstoves, boilers, and more. As a trusted supplier, National Flues ensures that every product, including our retro-fit chimney base, offers strength, durability, and compliance with HETAS and CE standards. Discover how our flue installation accessories can enhance your home heating syst Read more...
The price you pay today £65.99
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At a Glance

    Adjustable support from 0mm to 120mm for versatile installation
    Engineered for both solid fuel and gas/oil appliances
    Dual stainless steel construction: 304 outer and 316 inner (0.40mm thick)
    High-density compressed rockwool insulation enhances safety
    Can support up to 10m of chimney directly above the tee
    HETAS approved and CE marked for rigorous safety and performance
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.

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All our products come with warranties and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.

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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.

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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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.
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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]

The Retro Fit Base Support - 150mm is engineered specifically for solid fuel and gas/oil appliances, making it perfect for woodstoves, gas coal effect fires, oil and gas boilers, and other solid fuel systems. Constructed with a 304-grade stainless steel outer skin and a 316-grade stainless steel inner skin, each 0.4mm thick, this base support is built to last. The high-density compressed rockwool insulation provides a formidable barrier, enhancing its safety and effectiveness.

Fully welded parts ensure durability, while the flue-to-combustible distance complies with TWPro and KC standards. HETAS approved and CE marked, this product meets rigorous quality standards. Designed for easy installation with locking bands, this support is adjustable from 0mm to 120mm and can support up to 10m of chimney immediately above the tee, making it suitable for both single and two-storey homes.

SKU: 15-150-160

Technical Specifications
SKU15-150-160
Product NameRetro Fit Base Support - u00d8 150
Outer Material304 Stainless Steel (0.40mm thick)
Inner Material316 Stainless Steel (0.40mm thick)
InsulationHigh-density compressed rockwool
ApprovalsHETAS / CE
Flue To Combustible DistanceTWPro 50mm / KC 60mm
Adjustability0mm to 120mm from wall
Load Bearing CapacitySupports up to 10m chimney directly above the tee
Compatible AppliancesWoodstoves, gas coal effect fires, oil and gas boilers
Installation is straightforward: ensure the underlying structure is sound, fix the support securely using the recommended locking bands, and adjust the installation depth from 0mm up to a maximum of 120mm. When installing, confirm that the flue-to-combustible distance adheres to the TWPro (50mm) or KC (60mm) standard. Always utilise the advised fixings for optimal security and safety during installation. For best results, review the installation manual provided and, if in doubt, consult a professional installer.

The Retro Fit Base Support is suitable for solid fuel appliances, gas and oil appliances, including woodstoves, gas coal effect fires, and boilers.

The distance required from the flue to any combustible material is 50mm for TWPro and 60mm for KC.

Installation is straightforward, utilizing locking bands to secure the twin wall insulated chimney parts together. It is designed to be retrofitted, making the installation process simpler.

The outer skin is made of 304-grade stainless steel, while the inner skin is 316-grade stainless steel. Both have a thickness of 0.4mm, and the insulation is high-density compressed rockwool.

Yes, the Retro Fit Base Support is HETAS approved and CE marked, meeting strict industry standards for safety and performance.

Yes, it can be used as a load-bearing intermediate support for longer flue runs. It is adjustable and can support up to 10m of chimney above the tee.

Only the recommended fixings should be used to ensure optimal safety and performance.

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