Top Plate - Ø 250
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: [email protected]
- Info
- Specs
- Install
- FAQs
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
Technical Specifications | |
---|---|
Dimensions | 400mm x 400mm square |
Material | 316L Stainless Steel |
Colour Finish | Natural / Stainless Steel |
Fuel Compatibility | Wood (<20% moisture), Smokeless Coal, Gas, Oil |
Temperature Rating | Up to 600u00b0C (T600 designation) |
Certifications | HETAS / CE |
System Compatibility | MI-FLEX Accessories MF20 (316 and 904 flue liners) |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
National Flues Ltd Verdict
The Top Plate Ø 250 is an essential component for chimney systems using MI-FLEX 316 and 904 flue liners. With our reliable nationwide delivery and competitive pricing, National Flues ensures you get top-notch quality and value whether you're a retail or trade customer.
The Top Plate Ø 250 is designed to support the vertical weight of flexible flue liners in chimney systems, ensuring stability and compliance with building regulations.
National Flues is a trusted supplier of high-quality fireplaces and flues, catering to both retail and trade customers across the UK. Known for competitive pricing and reliable delivery, we offer secure online payments and dedicated trade accounts.
