Testing Length 500mm Ø 175
At a Glance
- 500mm testing length for optimal system performance
- Suitable for solid fuel, gas, and oil appliances
- Dual stainless steel construction (304 outer, 316L inner) for durability
- Twin wall insulated design ensures thermal efficiency
- Built-in test point and cap for easy gas and draft sample collection
- HETAS approved and CE marked for superior 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 500mm Testing Length Ø175 TWPro Twin Wall Insulated Chimney Flue is designed for solid fuel, gas, and oil appliances, such as woodstoves, gas-coal effect fires, and boilers. Featuring a test point and cap for easy gas and draft sample collection, this flue ensures safe operation and maintenance.Built with high-quality materials, the outer skin is crafted from 304-grade stainless steel (0.4mm thick), while the inner skin uses 316-grade stainless steel (0.4mm thick). Insulated with compressed rockwool at a density of 200kg/m³, the flue maintains optimal temperature and safety standards.
All components are fully welded for durability, and the flue requires a 50mm clearance from any combustible materials like wood or plasterboard.TWPro is HETAS approved and CE marked, meeting the highest safety and quality standards. Easy to install, the components secure together with a locking band, providing a reliable fit for any chimney system.
SKU: 2-175-019
Technical Specifications | |
---|---|
Testing Length | 500mm |
Internal Diameter | 175mm |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool, 200kg/mu00b3 |
Appliance Compatibility | Wood, Oil, Gas, Low sulphur coal |
Approvals | HETAS, CE |
Clearance | 50mm from combustible materials |
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.
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National Flues Ltd Verdict
The 500mm Testing Length Ø175 TWPro Chimney Flue is a top-notch product, perfect for both retail and trade customers. With nationwide delivery and competitive pricing, it's a reliable choice for any solid fuel, gas, or oil installation.
The TWPro 500mm Testing Length Ø175 Chimney Flue is designed for use with solid fuel, gas, and oil appliances to ensure safe venting and optimal performance.
TWPro is a trusted brand in the chimney flue industry, known for its high-quality, HETAS approved, and CE marked products that meet stringent safety and performance standards.
