TWPro MB - Adjustable Pipe 350-500mm - Ø 125
At a Glance
- Adjustable length from 350mm to 500mm
- Precision engineered for solid fuel, gas, and oil appliances
- Outer skin of 304 stainless steel with a high-temperature black finish
- Inner skin constructed from robust 316L stainless steel
- High-density compressed rockwool insulation (200kg/m³) for optimal heat resistance
- HETAS approved and CE marked for safety and reliability
- Free Locking Band included for secure assembly

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 125mm is ideal for a range of heating appliances, including woodstoves, gas coal effect fires, oil boilers, and gas boilers. Crafted to perfection, its outer skin is made from 0.4mm thick 304 stainless steel with a high-temperature black finish, while the inner skin features robust 316 grade stainless steel of the same thickness. Insulated with high-density compressed rockwool at 200kg/m3, this chimney pipe ensures maximum safety with a minimum distance of 50mm to combustibles.
Fully welded for optimum durability, this product 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. Installation is a breeze with the supplied Locking Band, ensuring a secure fit and adhering to safety guidelines.
SKU: 37-125-015
Technical Specifications | |
---|---|
SKU | 37-125-015 |
Adjustable Range | 350-500mm |
Pipe Diameter | 125mm |
Outer Material | 304 Stainless Steel with High-Temperature Black Coating (0.40mm thick) |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Insulation | High-Density Compressed Rockwool at 200kg/mu00b3 |
Approvals | HETAS and CE Marked |
Minimum Clearance | 50mm from combustibles |
Accessories Included | Free Locking Band and additional insulation pieces |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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 TWPro MB Adjustable Chimney Pipe is a top-notch product that meets all safety standards with HETAS approval and CE marking. National Flues is proud to offer reliable delivery nationwide, serving both retail and trade customers with competitive prices.
The TWPro MB Adjustable Pipe is designed for use in chimney systems of solid fuel, gas, and oil appliances, providing adjustable length to fit various installation needs.
TWPro is a reputable brand known for producing high-quality chimney and flue systems. Their products are designed to meet rigorous safety standards and provide reliable performance for various heating applications.
