TWPro MB - Joist Support - Ø 175
At a Glance
- - Premium 304/316 stainless steel construction
- - Robust compressed rockwool insulation
- - Fully welded joints for superior stability
- - HETAS and CE approved for safety
- - Designed for both 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 MB Joist Support Ø 175mm is meticulously engineered for use with solid fuel and gas/oil appliances such as wood stoves, gas coal effect fires, oil, and gas boilers. Constructed with premium materials, the outer skin features 304 grade stainless steel measuring 0.4mm thick, while the inner skin utilises 316 grade stainless steel, also at 0.4mm thick. The insulation comprises compressed rockwool, ensuring a robust density of 200kg/m³ TWPro / 128kg/m³ KC, and all parts are fully welded for maximum stability.With HETAS and CE approvals under its belt, the TWPro MB Joist Support meets stringent industry standards, carrying designation numbers like TWPro EN1856-1 T600 N1 W V2 L50040 G50 and KC EN1856-1 T200 W V2 L50040 O20, among others.
This joist support ensures a safe distance of 50mm from combustibles when using TWPro, and 60mm for KC. The ease of installation is enhanced by secured connections using a Locking Band, maintaining necessary distances from flammable materials like wood or plasterboard.
SKU: 58-175-068
Technical Specifications | |
---|---|
SKU | 58-175-068 |
Model | TWPro MB - Joist Support - u00d8 175mm |
Diameter | 175mm |
Outer Skin | 304 grade stainless steel, 0.4mm thick |
Inner Skin | 316 grade stainless steel, 0.4mm thick |
Insulation | Compressed rockwool (200kg/mu00b3 for TWPro, 128kg/mu00b3 for KC) |
Load Support Maximum Distance | 3 metres |
Approvals | HETAS, CE |
Designation Numbers | TWPro EN1856-1 T600 N1 W V2 L50040 G50, KC EN1856-1 T200 W V2 L50040 O20, etc. |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The TWPro MB Joist Support Ø 175mm is an outstanding choice for anyone seeking a reliable and robust support system for their chimney. At National Flues, we are rarely beaten on price and offer swift, dependable delivery across the UK. Serving both retail and trade customers, this product has our full endorsement for top performance and value.
The TWPro MB Joist Support Ø 175mm is designed to support chimneys as they pass through floor joists, ensuring even weight distribution and stability.
National Flues is a leading supplier of fireplaces and flues across the UK, known for unbeatable prices, reliable delivery, and excellent service to both retail and trade customers.
