× National Flues
We Will NOT Be Beaten on Price.
Free Delivery on Orders Over £100
5 Star Reviewed on Trustpilot
Free Flue Design Service Available
Help? 01670 206999 (8am-5pm)

TWPro MB - Flat Increasing Adaptor - Ø 125-150mm

The TWPro MB Flat Increasing Adaptor Ø 125-150mm is a reliable and high-quality solution engineered by TWPro for modern flue systems. Ideal for connecting woodstoves, gas boilers, oil burners, and solid fuel appliances, this adaptor offers a robust, certified option that complements your heating ins... More...
Hover to Zoom / Click for Gallery

At a Glance

  • HETAS Approved and CE marked for safety compliance
  • Constructed with 0.4mm thick 304 stainless steel (outer) and 316L stainless steel (inner)
  • Flat increasing design offering a compact solution for transitioning between flue systems
  • Insulated with dense, compressed rockwool (200kg/m³) for superior thermal performance
  • Versatile use with woodstoves, oil boilers, gas boilers, and solid fuel appliances
  • Includes a Locking Band for secure, easy installation
Now only £53.99
Including VAT Buy with confidence. If you find this cheaper within 48 hours of checkout, we'll refund the difference.

 

Payment Options

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]

The TWPro MB Flat Increasing Adaptor Ø 125-150mm is a versatile and essential component for connecting your appliance outlet to a TWPro system or transitioning from single wall connecting flue or vitreous enamel to TWPro. Its flat design ensures a smooth and efficient transition over the shortest length. **Application**: Perfect for use with a variety of appliances including woodstoves, gas coal effect fires, oil boilers, gas boilers, and any solid fuel appliances. This adaptor ensures optimal performance and safety.**Construction**: Crafted with an outer skin of 0.4mm thick 304 stainless steel, coated in a high-temperature black finish.

The inner skin is made of 0.4mm thick 316-grade stainless steel. The component is fully insulated with compressed rockwool, providing a density of 200kg/m3, and all parts are fully welded for maximum durability. **Approvals**: TWPro products are HETAS Approved and CE marked, signifying compliance with strict European standards. Designation numbers: EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.**Installation**: Easy to install using the supplied Locking Band, ensuring a secure connection.

Maintain a safety clearance of 50mm from the flue's exterior to any combustible materials like wood or plasterboard.

SKU: 37-125-009

Technical Specifications
Adaptor TypeFlat Increasing Adaptor
Diameter Increaseu00d8 125mm to u00d8 150mm
Outer Material304 Stainless Steel with high temperature black coating (0.4mm thick)
Inner Material316L Stainless Steel (0.4mm thick)
InsulationCompressed Rockwool, 200kg/mu00b3
CertificationsHETAS Approved, CE Marked
Installation AccessoriesIncludes Locking Band
Minimum Clearance50mm from flue exterior to any combustible material
• Before beginning, verify that all parts and surfaces are clean and free from debris. • Position the adaptor carefully to ensure a smooth connection between your appliance outlet and the TWPro system or transition flue. • Secure the adaptor using the supplied Locking Band, ensuring it is firmly attached. • Maintain a minimum clearance of 50mm from any combustible materials such as wood framing or plasterboard. • Follow local building regulations and the detailed installation manual provided for compliance and safety. • Double-check all connections after installation to ensure there are no gaps and that the adaptor is fully secured.

The adaptor increases from Ø 125mm to Ø 150mm, making it versatile for various installations.

Yes, the TWPro MB Flat Increasing Adaptor is HETAS Approved and CE marked.

Yes, it is suitable for use with woodstoves, gas coal effect fires, oil boilers, gas boilers, and any solid fuel appliances.

The outer skin is made from 304 stainless steel with a high-temperature black finish, and the inner skin is 316-grade stainless steel. It is insulated with compressed rockwool.

A clearance of 50mm must be maintained from the outside of the flue to any combustible materials like wood or plasterboard.

The adaptor is secured using a Locking Band, which is supplied with the product.

Its flat design enables a smooth and efficient transition with minimal required length, making it practical for compact installations.
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.

Read our buyers guide for this TWPro MB - Flat Increasing Adaptor - Ø 125-150mm

National Flues Ltd Verdict

The TWPro MB Flat Increasing Adaptor is an exceptional choice for both trade and retail customers looking for high-quality flue components. Our expert team at National Flues highly recommends this adaptor for its robust construction and versatility. Enjoy reliable delivery across the UK.

This product is designed to connect an appliance outlet to a TWPro increasing adaptor, or transition from a single wall connecting flue or vitreous enamel to TWPro.

TWPro is a trusted brand known for its high-quality flue solutions. All products in the TWPro range are designed for optimal performance, durability, and compliance with stringent safety standards.

 

Our Rating Image

Secure your adaptor today and guarantee a safe, efficient installation for your heating solution.

Your recently viewed products:

Multiple Payment Options- including Klarna, Clearpay, Mastercard, Visa and Paypal
Free Design Service