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 250 (20-250-P)

Discover the exceptional quality of the Top Plate Ø 250 from National Flues, a premium accessory designed to provide robust support for flexible flue liners. Perfectly engineered for MI-FLEX 316 and 904 systems, this durable chimney support component ensures secure installation and long-lasting performance. Read more...
Now only £11.99
Give us a call if you find it cheaper and we'll normally price match.
  • Fast deliveryFriday, November 14th*
  • Best PriceCall us to beat any price you found online.
  • Secure checkoutCard· Google/Apple Pay· Klarna· Paypal

 

Payment Options

At a Glance

  • Robust 400mm square design for secure chimney support
  • Constructed from high-grade 316L stainless steel for durability and corrosion resistance
  • Engineered for MI-FLEX 316 and 904 flexible flue liners
  • Complies with BSEN 1856-2 T600 N1 W V2 L50012 G standards
  • Suitable for multiple fuel types including wood, oil, gas, and smokeless coal

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 250, measuring 400mm square, is an integral part of your chimney system designed to provide robust support for MI-FLEX 316 and 904 flexible flue liners. This top plate, in conjunction with the Top Clamp and Top Insert Sleeve, ensures that the flue liner remains securely positioned at the top of the stack, effectively bearing its vertical weight. Adhering to Building Regulations Document J, this setup is suitable for wood (less than 20% moisture), smokeless coal, gas, and oil appliances up to a searing 600°C (T600 designation).

It's imperative that the enclosing chimney is made of sound masonry with proper weatherproofing and flaunching. For optimal functionality and safety, ensure regular maintenance, including at least annual sweeps by a competent person, ideally twice a year for solid fuel systems. Chemical cleaners and mild steel tools should not be used on stainless steel chimneys.

SKU: 20-250-P

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, November 14th. 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 square
Material316L Stainless Steel
Colour FinishNatural / Stainless Steel
Fuel CompatibilityWood (<20% moisture), Smokeless Coal, Gas, Oil
Temperature RatingUp to 600°C (T600 designation)
CertificationsHETAS / CE
System CompatibilityMI-FLEX Accessories MF20 (316 and 904 flue liners)
Before installation, ensure that the chimney stack is fully weatherproofed and constructed of sound masonry. The Top Plate Ø 250 must be installed in conjunction with the Top Clamp and Top Insert Sleeve to keep the flexible flue liner securely in place at the top of the chimney. It is vital to follow the manufacturer's guidelines closely and ensure that all flue components are correctly aligned and secured. Regular maintenance is essential; inspect and clean the system at least once a year, or twice per year for solid fuel systems, using only recommended tools and non-corrosive cleaning methods. Avoid using chemical cleaners or mild steel tools on stainless steel components to maintain the integrity and longevity of your chimney.

The Top Plate Ø 250 measures 400mm square.

The Top Plate Ø 250 is specifically designed for use with MI-FLEX 316 and 904 flexible flue liners.

The top plate is suitable for wood with less than 20% moisture, smokeless coal, gas, and oil appliances up to 600°C.

Yes, the chimney stack must be fully weatherproofed, and in sound condition before installing the Top Plate Ø 250.

The chimney system should be inspected and cleaned at least once a year. For solid fuel appliances, it is recommended to sweep the chimney twice a year.

Chimney sweeping should be carried out by a competent person, preferably a HETAS registered sweep for solid fuel applications.

No, you should not use chemical cleaners or mild steel tools on stainless steel chimneys.

 

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