TWPro MB - Twin Wall to Twin Wall Increaser - Ø 100-125mm (37-100-004)
At a Glance
- Robust design engineered for seamless transition from 100mm to 125mm flue diameters
Constructed with 316L stainless steel inner skin and 304 stainless steel high temperature black coated outer skin
Compressed rockwool insulation (200kg/m³) ensures optimal thermal performance
HETAS approved and CE marked for safety and regulatory compliance
Simplified installation with an included Locking Band
Versatile compatibility with wood, gas, and oil appliances
Maintains safe 50mm clearance to combustible materials for reliable, secure operation
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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, on a retail basis. Give us a call if you find it cheaper and want to buy from us.
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 MB - Twin Wall to Twin Wall Increaser Ø 100-125mm is specifically designed for solid fuel and gas/oil appliances, such as wood stoves, gas coal effect fires, oil boilers, and gas boilers. This increaser allows you to smoothly transition between different flue sizes, enhancing the efficiency and performance of your chimney system.Constructed with an outer skin of 304 stainless steel, coated with a high-temperature black finish, and a 316-grade stainless steel inner skin, the increaser promises durability and resistance to high temperatures. The compressed rockwool insulation (density of 200kg/m³) ensures optimal thermal performance while maintaining safety standards.TWPro products are HETAS approved and CE marked, meeting the stringent quality and safety norms.
The product designation numbers are EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.Installation is hassle-free with the provided Locking Band, ensuring secure assembly. It's critical to maintain a 50mm distance from combustible materials such as wood and plasterboard to the exterior of the flue for safety.
SKU: 37-100-004
| Technical Specifications | |
|---|---|
| SKU | 37-100-004 |
| Increaser Size | u00d8 100-125mm |
| Inner Material | 316L Stainless Steel (0.40mm thick) |
| Outer Material | 304 Stainless Steel - High Temperature Black Coated (0.40mm thick) |
| Insulation | Compressed Rockwool (200kg/mu00b3) |
| Certifications | HETAS / CE |
| Minimum Clearance | 50mm from combustible materials |
| Compatible Fuels | Wood, Oil, Gas, Low Sulphur Coal |
| Included Accessory | Locking Band for secure installation |
