H-Cowl Ø 125
At a Glance
- - HETAS approved & CE marked
- - Dual layer stainless steel construction (304 outer & 316 inner, 0.40mm thick)
- - High-density compressed rockwool insulation (200kg/m3)
- - Static design with no moving parts for wind protection
- - Secure locking band design ensuring a safe 50mm distance from combustibles

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: [email protected]
- Info
- Specs
- Install
- FAQs
The H-Cowl Ø 125 is an exceptional chimney terminal designed for use with solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, and oil and gas boilers. Constructed with robust 304-grade stainless steel for the outer skin and 316-grade stainless steel for the inner skin, each with a thickness of 0.4mm, this terminal offers long-lasting durability. The insulation is made from high-density compressed rockwool (200kg/m3) ensuring optimum thermal performance.
Fully welded parts and a CE mark demonstrate its high-quality construction, and it is HETAS approved. Designed to keep a safe 50mm distance from combustible materials, this H-Cowl terminal is secured with a locking band and promises excellent protection from wind-driven downdrafts and water ingress, making it ideal for high-wind areas.
SKU: 2-125-103
Technical Specifications | |
---|---|
SKU | 2-125-103 |
Product Name | H-Cowl u00d8 125 |
Dimensions | u00d8125mm |
Outer Material | 304 Stainless Steel - 0.40mm thick |
Inner Material | 316 Stainless Steel - 0.40mm thick |
Insulation | High-density compressed rockwool (200kg/m3) |
Approvals | HETAS / CE |
Safety Clearance | 50mm from combustible materials |
Compliance Standards | EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20 |
System | TWPro |
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.
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National Flues Ltd Verdict
The H-Cowl Ø 125 is a top-tier chimney terminal that excels in high wind areas and prevents water ingress efficiently. Delivering nationwide, we support both retail and trade customers with competitive pricing and reliable delivery services.
The H-Cowl Ø 125 is designed to prevent downdrafts and water ingress in chimneys, ensuring optimal performance for solid fuel and gas/oil appliances.
National Flues is a leading UK supplier of fireplaces and flues, renowned for unbeatable prices, reliable delivery, and excellent service to both retail and trade customers nationwide.
