The Mi-Flues TWPro BLK Wall Support 130–210mm – Ø175 is a twin wall flue support component designed to provide reliable lateral support for insulated chimney systems while maintaining a neat adjustable stand-off from the wall. Suitable for use with solid fuel, gas and oil appliances, it is a practical support accessory for installations requiring strength, adjustability and compliance with twin wall flue system requirements.
This wall support is designed for lateral support only and should be used at a minimum of every 3 metres within the flue run. Its adjustable design allows the flue to be positioned at a controlled distance from the wall, with a minimum stand-off of 80mm and a maximum of 420mm, giving a total 340mm adjustment range. To achieve the required effective length, the support must be manually cut down to suit the installation.
The TWPro BLK Wall Support is suitable for a wide range of appliances including wood burning stoves, solid fuel appliances, gas coal effect fires, oil boilers and gas boilers. This makes it a versatile option for installers and customers working across different heating systems while wanting to keep consistency within the same flue range.
Built as part of the Mi-Flues TWPro BLK system, the support is manufactured using durable stainless steel materials. The outer skin is made from 304 grade stainless steel at 0.4mm thickness, while the inner skin is made from 316 grade stainless steel, also at 0.4mm thickness. Insulation is formed from compressed rockwool with a density of 200kg/m³, and all parts are fully welded for strength and durability.
The system is designed to maintain a 50mm distance to combustibles, which is an important installation requirement when positioning the flue in relation to surrounding materials such as timber or plasterboard. TWPro is also HETAS Approved and CE marked, and components are secured together using a locking band, helping ensure a safe and stable chimney system installation.
Key Features
- Twin wall wall support
- Ø175mm flue size
- Lateral support only
- Use minimum every 3 metres
- Adjustable from 80mm to 420mm
- 340mm adjustment range
- Manually cut to size
- Suitable for solid fuel
- Suitable for gas and oil
- 304 stainless steel outer skin
- 316 stainless steel inner skin
- Compressed rockwool insulation
- Fully welded construction
- 50mm distance to combustibles
- HETAS Approved
- CE marked
- Locking band system
Expert Insight
An adjustable wall support like this is particularly useful on twin wall systems because it helps keep the flue properly stabilised while giving enough flexibility to suit different stand-off distances on site. The key point is that it provides lateral support only, so it should be used as part of the wider correctly specified support arrangement rather than as the main load-bearing component.
Suitability
The Mi-Flues TWPro BLK Wall Support 130–210mm – Ø175 is well suited to twin wall chimney installations for wood burning stoves, solid fuel appliances, gas fires, oil boilers and gas boilers where adjustable lateral support is required.
Installation / Technical Notes
This wall support is for lateral support only and should be used at a minimum of every 3 metres. It allows an adjustable distance from the wall of 80mm minimum to 420mm maximum, giving 340mm adjustment overall, and must be manually cut down to achieve the required effective length. It is suitable for solid fuel, gas and oil appliances. The outer skin is 304 grade stainless steel, 0.4mm thick, the inner skin is 316 grade stainless steel, 0.4mm thick, and insulation is compressed rockwool at 200kg/m³. All parts are fully welded. Required distance to combustibles is 50mm. The system is HETAS Approved, CE marked, and parts are secured using a locking band.
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