TWPro GREY - Flat Increasing Adaptor - Ø 125-150mm
At a Glance
- HETAS Approved & CE Marked
- Constructed with 304 & 316L stainless steel for superior durability
- Compressed rockwool insulation (200kg/m³) for excellent thermal protection
- Fully welded design ensuring long-lasting performance
- Maintains a safe 50mm clearance from combustibles
- Versatile solution for connecting various solid fuel and gas/oil appliances

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 Flat Increasing Adaptor Ø 125-150mm is designed for seamless integration with solid fuel and gas/oil appliances, including woodstoves, gas coal effect fires, and oil and gas boilers. Constructed with an outer skin made from 304-grade stainless steel and an inner layer of 316-grade stainless steel, each 0.4mm thick, this adaptor guarantees longevity and resistance to corrosion. The insulation consists of compressed rockwool with a density of 200kg/m³, providing excellent thermal protection.
The meticulous craftsmanship includes fully welded parts, ensuring maximum durability. The adaptor is HETAS Approved and CE marked, adhering to the designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 W V2 L50040 O20. It requires a minimum distance of 50mm from combustibles, making it a safe and efficient solution for your flue system needs.
Installation is straightforward, requiring the use of a Locking Band to secure the chimney parts. Ensure you maintain a 50mm distance from any combustible material.
SKU: 17-125-009
Technical Specifications | |
---|---|
Model | TWPro GREY - Flat Increasing Adaptor - u00d8 125-150mm |
Materials | Inner: 316L Stainless Steel 0.4mm, Outer: 304 Stainless Steel 0.4mm |
Insulation | Compressed Rockwool (200kg/mu00b3) |
Approvals | HETAS / CE |
Designation | EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20 |
Minimum Distance To Combustibles | 50mm |
Compatible Fuels | Wood, Oil, Gas, Low sulphur coal |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The TWPro GREY Flat Increasing Adaptor is a top-tier choice for those seeking reliable flue solutions. With nationwide delivery and the ability to serve both retail and trade customers, National Flues ensures you get the best at unbeatable prices.
The TWPro GREY Flat Increasing Adaptor Ø 125-150mm is designed to facilitate the connection between various solid fuel and gas/oil appliances to the TWPro flue system, ensuring a secure and efficient flue setup.
National Flues is a trusted supplier of high-quality fireplaces and flues, dedicated to serving retail and trade customers nationwide with reliable delivery and competitive prices. We pride ourselves on our exceptional customer service and secure online payment options.
