TWPro MB - Single Wall to Twin Wall Increaser - Ø 175-Ø 200 (37-175-002)
At a Glance
- Premium dual stainless steel construction (316L inner, 304 outer with high-temperature black finish)
Suitable for solid fuel, gas, and oil appliances
HETAS Approved and CE marked for safety and compliance
Includes a secure Locking Band for easy installation
Provides a safe 50mm clearance from combustibles
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 - Single Wall to Twin Wall Increaser is an essential component for your chimney flue system, especially when upgrading from a 175mm single wall pipe to a 200mm twin wall insulated chimney. Designed for use with solid fuel, gas, and oil appliances, including wood stoves, gas coal effect fires, and boilers, this increaser ensures optimal performance and safety. Constructed with a durable outer skin of 304 grade stainless steel at 0.4mm thickness, it features a high-temperature black finish for added durability.
The inner skin, made from 316 grade stainless steel, also at 0.4mm thickness, ensures longevity. The rockwool insulation boasts a density of 200kg/m³, providing excellent thermal protection. Fully welded parts and a safe distance of 50mm to combustibles make installation straightforward and secure.
The TWPro MB Increaser is HETAS Approved and CE marked, with designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20, ensuring it meets the highest safety and quality standards. Installation is simplified with the included Locking Band, ensuring a secure and reliable fit.
SKU: 37-175-002
| Technical Specifications | |
|---|---|
| SKU | 37-175-002 |
| Size | u00d8 175 to u00d8 200 |
| Inner Construction | 316L Stainless Steel (0.40mm thick) |
| Outer Construction | 304 Stainless Steel (0.40mm thick, High Temperature Black Coated) |
| Insulation | Rockwool with density of 200kg/mu00b3 |
| Approvals | HETAS / CE |
| Distance To Combustibles | 50mm |
| System Compatibility | TWPro Black |
| Designation Numbers | EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20 |
