Insulation Cover Plate Ø 125
At a Glance
- Premium dual stainless steel construction (304 outer / 316 inner, 0.40mm thickness)
- Robust insulation with 200kg/m³ dense compressed rockwool
- HETAS approved and CE marked for safety compliance
- Designed specifically for TWPro Twin Wall Chimney systems
- Secures a safe 50mm clearance from combustible materials

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 Insulation Cover Plate Ø 125 is designed to cap off the final section of your TWPro Twin Wall Chimney, providing a secure and weatherproof finish. Suitable for solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, and boilers, this cover plate offers extensive versatility. Constructed with durable 304-grade stainless steel on the outside and 316-grade stainless steel on the inside, it boasts a thickness of 0.4mm for both layers.
The dense compressed rockwool insulation, with a density of 200kg/m³, guarantees optimal performance in high-heat environments. All components are fully welded for a seamless fit. The plate maintains a safe distance of 50mm from combustible materials, ensuring compliance with stringent safety standards.
The TWPro Insulation Cover Plate is HETAS approved and CE marked with designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20, underscoring its quality and safety credentials. Installation is straightforward, requiring the use of a locking band to secure the parts together, and it is crucial to observe the mandatory clearance from combustible materials.
SKU: 2-125-104
Technical Specifications | |
---|---|
SKU | 2-125-104 |
Plate Diameter | 125mm |
Outer Material | 304 Stainless Steel (0.40mm) |
Inner Material | 316 Stainless Steel (0.40mm) |
Insulation Density | 200kg/mu00b3 |
Approvals | HETAS, CE (EN1856-1 T600 N1 W V2 L50040 G50, EN1856-1 T200 W V2 L50040 O20) |
Clearance From Combustibles | 50mm |
Welding | Fully welded components |
Compatible With | TWPro Twin Wall Chimney |
Installation Method | Secured using a locking band |
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.
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National Flues Ltd Verdict
The Insulation Cover Plate Ø 125 is a robust and reliable component for your flue system. Ideal for both retail customers and trade professionals, it meets high safety standards and ensures perfect insulation. National Flues delivers nationwide, ensuring quick and dependable service.
The Insulation Cover Plate Ø 125 is used to cover and protect the final section of a TWPro chimney flue, especially when using a third-party terminal.
National Flues is a leading supplier of fireplaces and flues, offering quality products at competitive prices. We provide reliable nationwide delivery and serve both retail and trade customers, ensuring secure online payments for all.
