Free Delivery over £100+ 5on Trustpilot Browse our popular stoves Fast Mainland UK Delivery Buy stoves with install packs Call 01670 206 999 for help

Top Plate - Ø 180 (20-180-P)

Purchase the Top Plate Ø 180 from National Flues for a robust and reliable MI-FLEX flue liner installation. This premium chimney accessory, crafted from high-quality galvanised steel with a natural/stainless steel finish, is ideal for both residential and trade applications. Read more...
Now only £11.99
Give us a call if you find it cheaper and we'll normally price match.
  • Fast deliveryMonday, November 17th*
  • Best PriceCall us to beat any price you found online.
  • Secure checkoutCard· Google/Apple Pay· Klarna· Paypal

 

Payment Options

At a Glance

  • 400mm square robust design
  • Specifically engineered for MI-FLEX 316L and 904 flexible flue liner systems
  • Complies with BSEN 1856-2 T600 N1 W V2 L50012 G standards
  • Suitable for multiple fuel types including wood, oil, gas, and smokeless coal
  • Designed for use in tandem with the Top Clamp and Top Insert Sleeve

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

The Top Plate Ø 180 is a crucial component in the MI-FLEX family of installation fittings. Expertly designed to work seamlessly with MI-FLEX 316L and 904 flexible flue liners, this top plate forms part of a complete chimney system. Essential for supporting the vertical weight of the flue liner, the plate measures 400mm square and should be used in conjunction with the Top Clamp and Top Insert Sleeve for optimal performance.

The top plate is suitable for various fuel types, including wood with less than 20% moisture, smokeless coal, gas, and oil, and can withstand temperatures up to 600°C (T600 designation). Building Regulations Document J mandates the full enclosure of flexible flue liners within a masonry chimney, ensuring compliance and safety. Maintenance is straightforward, although care should be taken to have the chimney swept by a competent person, preferably a HETAS registered sweep, twice yearly for solid fuel applications.

SKU: 20-180-P

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.

Technical Specifications
Dimensions400mm x 400mm
MaterialGalvanised Steel
Fuel CompatibilityWood (<20% moisture), Oil, Gas, Smokeless Coal
Temperature Rating600°C (T600)
StandardBSEN 1856-2 T600 N1 W V2 L50012 G
SystemMI-FLEX Accessories MF20
Colour FinishNatural / Stainless Steel
CertificationsHETAS / CE
For optimal performance, the Top Plate Ø 180 must be installed in conjunction with the Top Clamp and Top Insert Sleeve. Ensure that the flexible flue liner is fully enclosed within a masonry chimney as stipulated by Building Regulations Document J. Installation should be carried out by a competent professional experienced with MI-FLEX systems. Always inspect the installation for any signs of wear or misalignment and remember not to use chemical cleaners or mild steel tools when cleaning the stainless steel parts. Regular maintenance, including chimney sweeping by a HETAS registered professional twice yearly for solid fuel installations, is essential for ensuring both safety and efficiency.

The Top Plate Ø 180 is used to support the vertical weight of MI-FLEX 316L and 904 flexible flue liners within a masonry chimney, ensuring a stable and secure installation.

Yes, the Top Plate Ø 180 is suitable for wood with less than 20% moisture, smokeless coal, gas, and oil, and can withstand temperatures up to 600°C.

The Top Plate Ø 180 measures 400mm square.

For a complete installation, you will need the Top Clamp and Top Insert Sleeve in conjunction with the Top Plate Ø 180.

Yes, according to Building Regulations Document J, flexible flue liners must be installed completely enclosed within a masonry chimney.

Chimneys serving solid fuel appliances should be swept at least twice a year, once at the end of the heating season and again before the start of the next heating season. For other fuels, an annual sweep is recommended.

No, chemical cleaners and mild steel tools should not be used to clean stainless steel chimneys. It is best to have the chimney swept by a competent person.

 

Call the Experts   8am-5pm
👀 5 people watching this