TWPro MB - Adjustable Pipe 350-500mm - Ø 150
At a Glance
- - Adjustable Length (350-500mm) for flexible installation
- - Constructed with dual stainless steel layers: 316L inner and 304 outer with high-temperature black coating
- - Suitable for a range of appliances including woodstoves, gas fireplaces, oil and gas boilers
- - Excellent insulation with 200kg/m3 compressed rockwool
- - HETAS approved and CE marked for safety and compliance

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 TWPro MB Adjustable Pipe 350-500mm Ø 150 is a top-of-the-line choice for those in need of a reliable and adaptable flue pipe. Designed for use with solid fuel and gas/oil appliances, including woodstoves, gas coal-effect fires, oil boilers, and gas boilers, this pipe delivers superior performance and ease of installation.Constructed with an outer skin of 304-grade stainless steel and an inner skin of 316-grade stainless steel, both 0.4mm thick, this flue pipe is built to last. The outer skin is finished with a high-temperature black coating to ensure a sleek, durable look.
The insulation comprises compressed rockwool with a density of 200kg/m3, providing excellent heat retention and energy efficiency. All parts are fully welded, ensuring robust construction and longevity.The TWPro MB Adjustable Pipe is HETAS approved and CE marked, with a designation number of EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20. Installation is straightforward, with all chimney parts securely connected using the supplied locking band.
Be sure to maintain a 50mm distance from the outside of the flue to any combustible materials like wood or plasterboard.
SKU: 37-150-015
Technical Specifications | |
---|---|
Model | TWPro MB - Adjustable Pipe 350-500mm u00d8 150 |
Length | Adjustable from 350mm to 500mm |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Outer Material | 304 Stainless Steel (0.40mm thick, high-temperature black coated) |
Insulation | Compressed Rockwool, 200kg/m3 density |
Approvals | HETAS / CE |
Clearance | 50mm from combustible materials |
Finish | High-temperature black coating on outer skin |
Suitable Fuels | Wood, Oil, Gas, Low sulphur coal |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
At National Flues, we highly recommend the TWPro MB Adjustable Pipe for its exceptional build quality and versatility in both solid fuel and gas/oil applications. With HETAS approval and CE marking, you can trust in its performance and safety. Plus, we deliver nationwide and serve both retail and trade customers.
The TWPro MB Adjustable Pipe is designed to provide a reliable flue connection for solid fuel and gas/oil appliances, offering superior performance and safety.
National Flues is a trusted supplier of high-quality fireplaces and flues, serving both retail and trade customers nationwide. Rarely beaten on price and commended for reliable delivery, National Flues ensures secure online payments and exceptional customer service.
