Pipe 1000mm Ø 125
At a Glance
- - Robust stainless steel twin wall construction
- - 1000mm length with an effective 965mm installation length
- - Outer 304-grade and inner 316-grade stainless steel walls (each 0.4mm thick)
- - Superior insulation using compressed rockwool (200kg/m³)
- - Fully HETAS approved and CE marked according to EN1856-1 standards
- - Mandatory 50mm clearance to combustibles for enhanced safety

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 1000mm Ø 125 Stainless Steel Twin Wall Chimney Flue Pipe is designed for use with solid fuel and gas/oil appliances, such as wood stoves, gas coal effect fires, and boilers. This flue pipe features an outer skin made from durable 304-grade stainless steel and an inner skin made from high-quality 316-grade stainless steel, each with a thickness of 0.4mm. The insulation between skins is crafted from compressed rockwool, boasting a density of 200kg/m3 for superior heat retention and safety.
Every component is precision welded to ensure longevity and reliability. With a safe distance of 50mm to combustibles, this pipe guarantees safe integration into any setup. The TWPro Twin Wall system is approved by HETAS and CE marked, ensuring compliance with EN1856-1 standards.
SKU: 2-125-010
Technical Specifications | |
---|---|
Length | 1000mm (Effective length: 965mm) |
Diameter | 125mm |
Inner Material | 316L Stainless Steel (0.4mm thick) |
Outer Material | 304 Stainless Steel (0.4mm thick) |
Insulation | Compressed Rockwool (200kg/mu00b3) |
Approvals | HETAS / CE marked (EN1856-1 compliant) |
Clearance To Combustibles | 50mm |
System | TWPro Twin Wall |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The 1000mm Ø 125 Twin Wall Chimney Flue Pipe is an exceptional choice for both trade and retail customers. With its top-notch construction and nationwide delivery from National Flues, you can't go wrong.
This pipe is designed for exhaust systems in solid fuel and gas/oil appliances, ensuring safe and efficient venting.
National Flues is a leading supplier of fireplaces and flues across the UK, known for unbeatable prices and reliable delivery to both retail and trade customers. Trust us for secure online payments and exceptional service.
