TWPro GREY - Structural Locking Band - Ø 125
At a Glance
- - Superior stainless steel construction using 304 grade for the outer skin and 316L for the inner skin
- - Fully welded joints for exceptional durability and strength
- - High-density compressed rockwool insulation rated at 200kg/m3 for efficient thermal performance
- - Designed for unsupported chimney lengths up to 2.9 meters
- - Compliant with HETAS and CE standards, ensuring safety and reliability

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 GREY Structural Locking Band Ø 125mm is essential for maintaining sturdy connections in your chimney system, especially where an unsupported length of up to 2.9 meters is necessary. Designed for use with solid fuel and gas/oil appliances, such as woodstoves and oil boilers, this locking band ensures your chimney system's stability and safety. Crafted with 304 grade stainless steel for the outer skin and 316 grade stainless steel for the inner skin, the band is thoroughly durable and resistant to wear.
It includes high-density, compressed rockwool insulation at 200kg/m3, and allows a safe distance of 50mm to any combustible materials. Fully welded components and HETAS and CE approvals attest to its superior construction and compliance with relevant safety standards, including EN1856-1 certifications for various temperature classes.
SKU: 17-125-054
Technical Specifications | |
---|---|
SKU | 17-125-054 |
Diameter | 125mm |
Outer Material | 304 Stainless Steel (0.40mm thick) |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Insulation | High-density compressed rockwool (200kg/m3) |
Max Unsupported Length | 2.9m |
Safety Distance | 50mm |
Approvals | HETAS, CE, EN1856-1 |
System | TWPro GREY |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 2nd. 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 GREY Structural Locking Band is a top-notch, reliable choice for securing your chimney connections. With exceptional durability and safety standards, it is perfect for both retail and trade customers. And with National Flues, you get unbeatable prices and nationwide delivery.
The TWPro GREY Structural Locking Band is designed to secure the joints in a twin-wall insulated chimney system, especially when unsupported chimney lengths are involved.
TWPro is known for manufacturing top-tier components for chimney systems, focusing on safety, durability, and compliance with rigorous industry standards. National Flues proudly supplies these high-quality products, ensuring excellent performance and satisfaction for both retail and trade customers.
