TWPro MB - Twin Wall to Twin Wall Increaser - Ø 175-Ø 200
At a Glance
- - Premium 316L and 304 stainless steel construction with high-temperature black finish
- - Fully welded design ensuring robust durability
- - Compressed rockwool insulation (200kg/m³) for optimal heat retention
- - Precisely designed to connect twin wall systems in 25mm increments
- - Suitable for wood, oil, gas, and low sulphur coal appliances
- - HETAS approved and CE marked for safety and compliance
- - Easy installation with secure locking bands and 50mm clearance requirement

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 175-Ø 200) is a top-tier solution for those looking to enhance their chimney system. This innovative product is ideal for a range of appliances including wood stoves, gas coal effect fires, oil boilers, and any solid fuel devices. Constructed meticulously with an outer skin of 304 stainless steel, coated in a high-temperature black finish, and an inner skin of 316 grade stainless steel, this increaser is built to withstand rigorous conditions.
With a compressed rockwool insulation boasting a density of 200kg/m3, it ensures excellent heat retention. All parts are fully welded, guaranteeing durability and performance. The TWPro series meets HETAS and CE certifications, ensuring safety and compliance.
Installation is straightforward with secure locking bands included, and the necessary 50mm clearance from combustibles is easily achievable. Enhance your flue system today with the TWPro MB Increaser, a trusted component from National Flues.
SKU: 37-175-004
Technical Specifications | |
---|---|
Model | TWPro MB |
Application | Twin Wall to Twin Wall Increaser |
Size | u00d8 175-u00d8 200 |
Inner Material | 316L Stainless Steel (0.40mm thick) |
Outer Material | 304 Stainless Steel (0.40mm thick) with high-temperature black coating |
Insulation | Compressed Rockwool (200kg/mu00b3) |
Certifications | HETAS, CE |
Clearance Requirement | 50mm from combustibles |
Suitable 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 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 highly recommend the TWPro MB Twin Wall to Twin Wall Increaser. This essential component is perfect for ensuring your heating systems operate efficiently and safely. As always, our delivery is reliable nationwide, serving both retail and trade customers with unmatched prices.
The TWPro MB Twin Wall to Twin Wall Increaser is designed to connect and expand flue systems in specified increments, enhancing compatibility and performance of your heating appliances.
National Flues is a leading supplier of high-quality fireplaces and flues across the UK, offering exceptional products for both retail and trade customers. Known for our unbeatable prices and reliable delivery services, we ensure secure online payments and an extensive range of trusted flue components.
