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Top Clamp - Ø 300

National Flues presents the Top Clamp - Ø 300, a premium chimney accessory designed for flawless integration with MI-FLEX flexible flue liners. Engineered for durability with high-quality 316L stainless steel, this product delivers exceptional performance in wood, smokeless coal, gas, or oil heating... More...
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At a Glance

  • High-quality 316L stainless steel construction
  • Compatible with MI-FLEX 316 and 904 flexible flue liners
  • Withstands temperatures up to 600°C (T600 designation)
  • Complies with Building Regulations Document J
  • Provides robust support to stabilise chimney linings
Now only £14.99
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

 

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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 300 is a crucial component for ensuring the stability and effectiveness of your chimney system. Perfectly designed for use with MI-FLEX 316 and 904 flexible flue liners, this top clamp provides essential support by bearing the vertical weight of the flue liner at the top of the stack. All MI-FLEX accessories, including this top clamp, comply with Building Regulations Document J, which mandates that a flexible flue liner must be installed completely enclosed inside a masonry chimney.

The top clamp is suitable for appliances operating at temperatures up to 600°C (T600 designation), making it ideal for use with wood (under 20% moisture), smokeless coal, gas, and oil. For optimal functionality, ensure that the chimney stack is fully weatherproofed and of sound construction, and that all chimney pots are in good condition with appropriate flaunching. Regular maintenance and sweeping are essential for safe operation, particularly with solid fuel appliances.

Adhering to recommended cleaning schedules will help prevent blockages and ensure long-term efficiency.

SKU: 20-300-C

Technical Specifications
SKU20-300-C
Product NameTop Clamp - u00d8 300
Material316L Stainless Steel
CompatibilityMI-FLEX 316 and 904 flexible flue liners
Temperature RatingUp to 600u00b0C (T600)
Fuel TypesWood (under 20% moisture), Smokeless coal, Gas, Oil
ComplianceHETAS / CE, Building Regulations Document J
FinishNatural / Stainless Steel
SystemMI-FLEX Accessories MF20
• Ensure the chimney stack is fully weatherproofed and built to proper standards before installation. • Confirm the integrity of chimney pots and use correct flaunching to maintain secure connections. • Follow all manufacturer instructions and Building Regulations Document J for optimal safety. • Regular maintenance, including at least biannual sweeping for solid fuel appliances, is essential to prevent blockages. • Always consult a competent and certified professional when undertaking installation or maintenance tasks.

The Top Clamp - Ø 300 is designed for use with MI-FLEX 316 and 904 flexible flue liners.

The installation must adhere to Building Regulations Document J, which requires the flexible flue liner to be completely enclosed inside a masonry chimney.

The Top Clamp - Ø 300 is suitable for use on appliances operating up to 600°C, designated as T600.

The top clamp is suitable for use with wood (under 20% moisture), smokeless coal, gas, and oil.

For solid fuel appliances, the chimney should be swept at least twice a year – once at the start and once at the end of the heating season. Chimneys serving other types of appliances should be swept at least once a year.

Chimney sweeping should be carried out by a competent person. For solid fuel appliances, a HETAS registered sweep is recommended.

Ensure that chimney pots are in good condition without cracks, and the chimney stack is fully weatherproofed and of sound construction before installation.
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.

Read our buyers guide for this Top Clamp - Ø 300

National Flues Ltd Verdict

The Top Clamp - Ø 300 is one of our top-rated products for reliable chimney flue installations. It offers seamless support and is designed to work perfectly with MI-FLEX flexible flue liners. We deliver nationwide and cater to both retail and trade customers, making us a dependable partner for all your flue solutions.

The Top Clamp - Ø 300 is used to support the vertical weight of a flexible flue liner at the top of a masonry chimney stack.

National Flues specialises in providing high-quality fireplaces and flue solutions nationwide. With an emphasis on unbeatable prices, reliability, and excellent customer service, we cater to both retail and trade customers, offering secure online payments and dependable deliveries.

 

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