2pc. Round Fixed Finishing Plate (150) 45° - Ø 125
At a Glance
- - 2-piece round fixed finishing plate for a flawless flue exit through non-combustible walls
- - Made with dual-layer stainless steel (304 outer, 316 inner) for superior durability
- - Designed for solid fuel and gas/oil appliances including woodstoves and boilers
- - HETAS approved and CE marked, ensuring industry-leading safety
- - Easy installation with silicone and screws using a secure Locking Band

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: sales@nationalflues.com
- Info
- Specs
- Install
- FAQs
Our 2pc. Round Fixed Finishing Plate (150mm, 45°) - Ø 125mm is a top-tier finishing solution designed for solid fuel and gas/oil appliances like woodstoves, gas coal effect fires, and oil and gas boilers. Expertly crafted with a dual-layer of premium stainless steel, the outer skin is composed of 304-grade stainless steel with a thickness of 0.4mm, while the inner skin is made from 316-grade stainless steel of the same thickness.
It features compressed rockwool insulation with an impressive density of 200kg/m3 TWPro / 128Kg/m3 KC, ensuring maximum durability and heat resistance.Safety is paramount; hence, this finishing plate ensures a safe distance to combustibles—50mm for TWPro and 60mm for KC. It holds HETAS approval and CE marking, and adheres to rigorous standards such as TWPro EN1856-1 T600 N1 W V2 L50040 G50, TWPro EN1856-1 T200 W V2 L50040 O20, KC EN1856-1 T600 N1 W V2 L50040 G60, and KC EN1856-1 T200 W V2 L50040 O20.Installing TWPro Twin Wall Insulated Chimney parts is straightforward with a Locking Band. Ensure a secure fit using silicone and screws, and maintain the recommended distance from the flue to any combustible materials.
SKU: 15-125-116
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. 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
At National Flues, we believe our 2pc. Round Fixed Finishing Plate (150mm, 45°) - Ø 125mm is a dependable solution for creating a tidy transition through non-combustible walls. Its robust construction and HETAS approval guarantee performance and safety. Whether you're a retail or trade customer, we're here to deliver swiftly and reliably, nationwide.
The 2pc. Round Fixed Finishing Plate is used to tidy the area where a flue passes through a non-combustible wall, providing a polished and secure finish.
National Flues is a leading supplier of fireplaces and flues across the UK, known for competitive pricing, reliable delivery, and catering to both retail and trade customers with secure online payments and trade accounts available.
