Top Clamp - Ø 250 (20-250-C)
At a Glance
- Made from high-grade 316L stainless steel for durability
Natural finish complements any chimney aesthetic
Withstands high temperatures up to 600°C (T600 rating)
Suitable for wood (with under 20% moisture), smokeless coal, gas, and oil applications
Integral part of the MF20 MI-FLEX accessory range for enhanced chimney support
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.
Warranty & Returns +
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.
Price Match Guarantee +
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.
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 Clamp - Ø 250 is a crucial installation accessory from the MF20 MI-FLEX range, engineered explicitly for use with MI-FLEX 316 and 904 flexible flue liners. This top clamp is instrumental in creating a fully functional chimney system. It effectively supports the vertical weight of the flue liner when used in conjunction with the Top Plate and Top Insert Sleeve at the stack's top.
Suitable for multiple fuel types including wood with less than 20% moisture, smokeless coal, gas, and oil, this clamp withstands temperatures up to 600°C (T600 designation). As per Building Regulations Document J, it is mandatory to install flexible flue liners completely enclosed within masonry chimneys, excluding any non-masonry enclosures such as timber or plasterboard boxing. The chimney structure must be sound and properly weatherproofed before installation.
Regular sweeping and maintenance, conducted by competent persons such as HETAS registered sweeps, ensure optimal performance and longevity of the chimney system. This should be done at least once a year or twice for solid fuel appliances.
SKU: 20-250-C
| Technical Specifications | |
|---|---|
| SKU | 20-250-C |
| Material | 316L Stainless Steel |
| Finish | Natural / Stainless Steel |
| Fuel Compatibility | Wood (under 20% moisture), Smokeless Coal, Gas, Oil |
| Temperature Rating | Up to 600°C |
| Certification | HETAS / CE |
| Product Range | MI-FLEX Accessories MF20 |
