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TWPro MB - H-Cowl - Ø 125 (37-125-103)

Discover the TWPro MB - H-Cowl - Ø 125 from National Flues – a premium anti-down draft terminal designed to offer unparalleled chimney protection. Perfect for woodstoves, oil and gas boilers, this sophisticated flue accessory utilises robust stainless steel construction and top-notch insulation, making it an ideal addition for solid fuel, gas, and oil applications. Read more...
TWPro MB - H-Cowl - Ø 125
IN STOCK
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Now only £104.99
including free delivery Give us a call if you find it cheaper and we'll normally price match.
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At a Glance

  • Robust 304 stainless steel outer skin with high temperature black coating
  • Durable 316L stainless steel inner skin and 0.40mm thickness for long-lasting performance
  • Fully HETAS approved and CE marked for safety and compliance
  • No moving parts design, ideal for high wind areas
  • Insulated with 200kg/m3 compressed rockwool to enhance energy efficiency
  • Secure locking band ensures stability during installation

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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 TWPro MB - H-Cowl - Ø 125 is a top-of-the-line anti-down draft terminal, specifically designed for solid fuel, gas, and oil appliances. It is ideal for woodstoves, gas coal effect fires, oil boilers, and gas boilers. Manufactured with a robust outer skin of 0.4mm thick 304 stainless steel and a 0.4mm thick inner skin made of 316 grade stainless steel, the H-Cowl is insulated with compressed rockwool at a density of 200kg/m3.

This exceptional construction ensures durability and high-performance. The high-temperature black finish adds an extra layer of protection. Fully HETAS approved and CE marked with designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20, it guarantees safety and compliance.

Installation is straightforward with all parts fully welded and a secure locking band provided. Be mindful to maintain a safe distance of 50mm from any combustible materials during installation.

SKU: 37-125-103

Delivery Information* +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. 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.

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Technical Specifications
SKU37-125-103
Designation 1EN1856-1 T600 N1 W V2 L50040 G50
Designation 2EN1856-1 T200 P1 W V2 L50040 O20
Outer Material304 Stainless Steel - 0.40mm thick, High Temperature Black Coated
Inner Material316L Stainless Steel - 0.40mm thick
InsulationCompressed Rockwool (200kg/m3)
Fuel CompatibilityWood, Oil, Gas, Low Sulphur Coal
ApprovalsHETAS / CE
Minimum Combatible Clearance50mm
Diameter125mm (5 inch)
• Ensure that the flue assembly is installed with a minimum clearance of 50mm from all combustible materials such as wood and plasterboard. • Use the provided secure locking band to firm up the structure, ensuring a stable connection between all welded components. • Follow all standard safety protocols during installation, and confirm that the system is in line with the HETAS and CE guidelines. • Verify that all measurements and clearances are accurately maintained to optimise performance and safety. • For any unforeseen issues during setup, refer to the detailed installation manual or contact our support team for assistance.

The H-Cowl is compatible with solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, oil boilers, and gas boilers.

The outer skin is made from 304 stainless steel with a thickness of 0.4mm, and the inner skin is made from 316 grade stainless steel, also 0.4mm thick. It is insulated with compressed rockwool at a density of 200kg/m3.

Yes, it is HETAS approved and CE marked with designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.

The parts are secured together using a locking band (supplied). Ensure a distance of 50mm from any combustible materials like wood or plasterboard when installing.

The H-Cowl is a static anti-down draft terminal with no moving parts, providing excellent stability and effectiveness in preventing down drafts and water ingress in high wind conditions.

A minimum distance of 50mm should be maintained from the outside of the flue to any combustible material.

National Flues offers competitive pricing, reliable nationwide delivery, and a commitment to serving both retail and trade customers. Our products are top-notch, and we ensure secure online payments for all retail orders.

 

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