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Top Clamp - Ø 250

The Top Clamp - Ø 250 from National Flues is a high-quality chimney accessory designed to support MI-FLEX flexible flue liners. Perfect for enhancing the safety and efficiency of your chimney system, this clamp is a must-have for any installation requiring robust, stainless steel solutions. With its... More...
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Now only £11.99
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

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

 

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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]

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
SKU20-250-C
Material316L Stainless Steel
FinishNatural / Stainless Steel
Fuel CompatibilityWood (under 20% moisture), Smokeless Coal, Gas, Oil
Temperature RatingUp to 600°C
CertificationHETAS / CE
Product RangeMI-FLEX Accessories MF20
Installation is straightforward yet vital for optimal chimney performance. The Top Clamp - Ø 250 must be used in conjunction with the Top Plate and Top Insert Sleeve to effectively support the weight of the MI-FLEX flexible flue liners. Ensure that your chimney system is fully contained within a masonry structure as stipulated by Building Regulations Document J. It is imperative that you inspect the chimney's condition – the masonry must be sound, stable, and fully weatherproofed prior to installation. After fitting, regular maintenance is recommended: a sweep by a HETAS registered professional at least once a year for gas or oil systems, and twice a year if you use solid fuels like wood or smokeless coal. Do not attempt installation on non-masonry enclosures such as timber or plasterboard boxing, as this can compromise the integrity of the chimney system and pose safety risks.

The Top Clamp - Ø 250 is used to support the vertical weight of MI-FLEX flexible flue liners in chimney systems.

Yes, it is suitable for multiple fuel types including wood (less than 20% moisture), smokeless coal, gas, and oil.

The clamp can withstand temperatures up to 600°C (T600 designation).

The chimney must be sound, weatherproofed, and the clamp must be used in conjunction with the Top Plate and Top Insert Sleeve.

Chimney systems should be cleaned and inspected at least once a year, and twice yearly for solid fuel appliances.

No, Building Regulations Document J mandates that flexible flue liners must be enclosed within masonry chimneys only.

For solid fuel applications, a list of HETAS registered sweeps can be found at www.hetas.co.uk.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. 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.

Read our buyers guide for this Top Clamp - Ø 250

National Flues Ltd Verdict

The Top Clamp - Ø 250 is an essential component designed for supporting flexible flue liners within chimneys. Ideal for various fuel types, it ensures durability and compliance with Building Regulations. National Flues offers reliable delivery nationwide and caters to both retail and trade customers.

The Top Clamp - Ø 250 is designed to support the weight of MI-FLEX flexible flue liners at the top of chimney stacks.

National Flues is a reputable supplier of fireplaces and flues, committed to providing quality products with competitive pricing and reliable nationwide delivery for both retail and trade customers.

 

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Invest in your chimney’s longevity today – secure this essential Top Clamp and experience the benefits of a professionally supported system.

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