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Top Insert Sleeve - Ø 150

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The Top Insert Sleeve Ø 150 is designed to fit securely inside a flexible chimney liner at the top of your installation. Used alongside the Top Plate and Top Clamp, it supports the weight of the liner without compromising the flue's integrity.

£12.99 incl VAT

  •   Description  
  •   Product Details  

The Top Insert Sleeve Ø 150 is an essential component in the MI-FLEX range of chimney accessories. Specifically designed for use with MI-FLEX 316 and 904 flexible flue liners, this sleeve ensures a secure and stable fit at the top of your chimney. The product complies with Building Regulations Document J, requiring that flexible flue liners be enclosed within masonry chimneys, and supports appliances with temperatures up to 600°C (T600 designation). Suitable for use with wood (less than 20% moisture), smokeless coal, gas, and oil appliances, the sleeve provides a reliable, durable, and weatherproof solution. When used in conjunction with the Top Plate and Top Clamp, it effectively distributes the vertical weight of the flue liner, maintaining the integrity of the chimney system. Easy to maintain, the system should be swept at least twice a year to ensure ongoing efficiency and safety.

  • SKU: 20-150-PS
  • Item: Top Insert Sleeve - u00d8 150
  • Designation:: BSEN 1856-2 T600 N1 W V2 L50012 G
  • System:: MI-FLEX Accessories MF20
  • Material:: 316L
  • Colour Finish:: Natural / Stainless Steel
  • Fuels:: Wood, Oil, Gas, Smokeless coal
  • Approvals:: HETAS / CE

What is it for?

The Top Insert Sleeve Ø 150 is designed to ensure a secure fit and support the weight of flexible chimney liners in a masonry chimney setup.

Brand Summary

National Flues is a leading UK supplier of high-quality fireplaces and flues, catering to both retail and trade customers with reliable delivery and competitive pricing.

National Flues Verdict

The Top Insert Sleeve Ø 150 is a must-have for any complete flue liner system. Its sturdy design ensures your chimney setup is secure and efficient. As always, National Flues offers reliable delivery across the UK, catering to both retail and trade customers.

Our Rating
9.7/10

FAQs

The Top Insert Sleeve Ø 150 is used to maintain a secure fit for flexible chimney liners, ensuring that the weight of the flue liner is properly supported at the top of the chimney stack.

Yes, the Top Insert Sleeve Ø 150 is suitable for use on appliances up to 600°C, making it ideal for a variety of fuel types including wood, smokeless coal, gas, and oil.

Absolutely, the product complies with Building Regulations Document J, which mandates that flexible flue liners must be installed within masonry chimneys.

The system should be swept by a competent person at least twice a year, once at the end of the heating season and again at the start. This ensures that any deposits or blockages are cleared for efficient operation.

No, under no circumstances should chemical cleaners or mild steel tools be used. It is recommended to use appropriate tools and techniques provided by certified professionals.

Yes, the Top Insert Sleeve Ø 150 can be used with wood (under 20% moisture), smokeless coal, gas, and oil appliances.

Before installation, ensure your chimney is fully weatherproof and of sound construction. Any chimney pots should be in good condition without cracks, and appropriate flaunching should be made at the top of the stack.