TWPro MB - Locking Band - Ø 125
At a Glance
- Robust construction with dual stainless steel layers (304 outer with high-temp black coating, 316L inner)
- Designed specifically for secure chimney flue joint connections
- HETAS approved and CE marked, ensuring compliance and safety
- Suitable for a range of appliances including woodstoves, oil boilers, gas appliances and low sulphur coal systems
- Incorporates compressed rockwool insulation for excellent thermal resistance
- Engineered for durability and long-lasting performance

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 Locking Band Ø 125 is essential for securely connecting two parts of a twin wall insulated chimney flue system. Designed for use with various appliances, including woodstoves, gas coal effect fires, oil boilers, and gas boilers, this locking band ensures reliable and safe joint connections. Constructed with an outer skin of 304 stainless steel coated in high-temperature black finish, and an inner skin of 316 stainless steel, both at 0.4mm thick, this product offers durability and performance.
The insulation is made from compressed rockwool with a density of 200kg/m3, providing excellent thermal resistance. This locking band is HETAS Approved and CE marked, with designations EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20. Ensure a 50mm distance from combustibles during installation.
SKU: 37-125-050
Technical Specifications | |
---|---|
SKU | 37-125-050 |
Designation | EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 P1 W V2 L50040 O20 |
Outer Material | 304 Stainless Steel - 0.40mm with High Temperature Black Coating |
Inner Material | 316L Stainless Steel - 0.40mm |
Insulation | Compressed Rockwool, Density 200kg/m3 |
Fuel Compatibility | Wood, Oil, Gas, Low sulphur coal |
Distance To Combustibles | 50mm |
Approvals | HETAS, CE |
System | TWPro Black |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The TWPro MB Locking Band Ø 125 is a top-tier choice for ensuring secure and reliable connections in your chimney flue system. At National Flues, we offer this high-quality product at unbeatable prices with fast delivery nationwide to both retail and trade customers.
The TWPro MB Locking Band Ø 125 is designed to securely connect two parts of a twin wall insulated chimney flue system, ensuring stable and safe joint connections.
National Flues is a leading supplier of fireplaces and flues in the UK, offering high-quality products and services to both retail and trade customers. We pride ourselves on our competitive prices, reliable delivery, and secure online payment options.
