5 Inch (125mm) Silver Twin Wall Flue

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  1. Twin Wall Eurocowl Anti Down Draught Cowl in Stainless Steel - 125mm

    Key Features:

    An anti down draught cowl fitted to the end of the flue system to help prevent down draught and rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £77.10 Regular Price £100.23
    • In Stock | 48 Hour Delivery
  2. Twin Wall Weathering Cap in Stainless Steel - 125mm

    Key Features:

    A weathering cap is used at the end of a flue system it helps to prevent down draught and rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £59.26 Regular Price £77.04
    • In Stock | 48 Hour Delivery
  3. Twin Wall Rain Cap in Stainless Steel - 125mm

    Key Features:

    A rain cap is used at the end of a flue system it helps to prevent rain entering the flue system. Supplied with a locking band. Learn More
    Special Price £59.35 Regular Price £77.16
    • In Stock | 48 Hour Delivery
  4. 45 Degree Twin Wall Oval 2-Part Finishing Plate in Stainless Steel - 125mm

    Key Features:

    A two part oval finishing plate used to give a neat finish where the flue passes through a ceiling or wall at 45 degrees. Learn More
    Special Price £34.28 Regular Price £44.56
    • In Stock | 48 Hour Delivery
  5. 30-45 Degree Twin Wall Square 2-Part Finishing Plate in Stainless Steel - 125mm

    Key Features:

    A two part square finishing plate used to give a neat finish where the flue passes through a ceiling or wall at 30-45 degrees. Learn More
    Special Price £44.67 Regular Price £58.07
    • In Stock | 48 Hour Delivery
  6. 45 Degree Twin Wall 1-Piece Finishing Plate in Stainless Steel - 125mm

    Key Features:

    A one piece finishing plate used to give a neat finish where the flue passes through a ceiling or wall at 45 degrees. Learn More
    Special Price £39.43 Regular Price £51.26
    • In Stock | 48 Hour Delivery
  7. 0 Degree Twin Wall 1-Piece Finishing Plate in Stainless Steel - 125mm

    Key Features:

    A one piece finishing plate used to give a neat finish where the flue passes through a flat ceiling. Learn More
    Special Price £39.43 Regular Price £51.26
    • In Stock | 48 Hour Delivery
  8. Twin Wall Sleeve in Stainless Steel - 125mm

    Key Features:

    A wall sleeve used where the flue passes horizontally through a wall. Learn More
    Special Price £41.11 Regular Price £53.44
    • In Stock | 48 Hour Delivery
  9. 45 Degree Twin Wall Sleeve in Stainless Steel - 125mm

    Key Features:

    A wall sleeve used where the flue passes through a wall at 45 degrees. Learn More
    Special Price £53.11 Regular Price £69.04
    • In Stock | 48 Hour Delivery
  10. Wide Twin Wall Locking Band in Stainless Steel - 125mm

    Key Features:

    The wide locking band is designed to connect twin wall parts other than straight lengths together such as twin wall bends. Learn More
    Special Price £34.07 Regular Price £44.29
    • In Stock | 48 Hour Delivery
  11. Twin Wall Ventilated Firestop Support Set in Stainless Steel - 125mm

    Key Features:

    A ventilated firestop support set used to support the flue and maintain ventilation where it passes through a ceiling or floor. Learn More
    Special Price £138.83 Regular Price £180.48
    • In Stock | 48 Hour Delivery
  12. Twin Wall Storm Collar in Stainless Steel - 125mm

    Key Features:

    Our twin wall storm collar is used to ensure that the area where the flue passes through the roof / flashing is kept watertight. Learn More
    Special Price £37.76 Regular Price £49.09
    • In Stock | 48 Hour Delivery
  13. Twin Wall Firestop Masking Plate in Stainless Steel - 125mm

    Key Features:

    A masking plate used to give a neat finish to the underside of a fire stop plate. Learn More
    Special Price £57.28 Regular Price £74.46
    • In Stock | 48 Hour Delivery
  14. Narrow Twin Wall Locking Band in Stainless Steel - 125mm

    Key Features:

    The narrow locking band is designed to connect straight lengths of twin wall pipe together. Learn More
    Special Price £25.25 Regular Price £32.83
    • In Stock | 48 Hour Delivery
  15. Twin Wall Fire Stop Plate in Stainless Steel - 125mm

    Key Features:

    A fire stop plate is used where the flue passes through a ceiling or floor to stop the spread of fire between rooms. Learn More
    Special Price £63.78 Regular Price £82.91
    • In Stock | 48 Hour Delivery
  16. 0-30 Degree Twin Wall Square 2-Part Finishing Plate in Stainless Steel - 125mm

    Key Features:

    A two part square finishing plate used to give a neat finish where the flue passes through a ceiling or wall at 0-30 degrees. Learn More
    Special Price £44.67 Regular Price £58.07
    • In Stock | 48 Hour Delivery
  17. Twin Wall Soot Collector with Drain in Stainless Steel - 125mm

    Key Features:

    Our Soot Collector with Drain is used in conjunction with the T-pieces to close off the flue system and provides a drain point. Learn More
    Special Price £53.62 Regular Price £69.71
    • In Stock | 48 Hour Delivery
  18. Twin Wall Round 2-Part Flat Finishing Plate in Stainless Steel - 125mm

    Key Features:

    A two part round flat finishing plate used to give a neat finish where the flue passes through a ceiling or wall. Learn More
    Special Price £34.29 Regular Price £44.58
    • In Stock | 48 Hour Delivery

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5 Inch Twin Wall Flue Systems

Our 5 inch twin wall flue systems allow you to install a stove safely in properties without an existing chimney. The double-walled design ensures exhaust gases are expelled efficiently while keeping the outer surface cooler, making them suitable for both single and multi-storey installations.

Why Do You Need a 5 Inch Twin Wall Flue?

  • Safe operation – double insulation protects against high surface temperatures
  • Compliance – designed to meet UK building regulations for stoves without a chimney
  • Flexible installation – works for straight or angled flue runs, including multi-storey setups
  • Durable materials – crafted from high-quality stainless steel for long-lasting performance

Components and Accessories

Alongside the 5 inch flue pipes, we stock all the parts you need to complete your installation:

  • Adaptors, bends, and T-pieces
  • Locking bands, brackets, and finishing plates
  • Top caps and rain cowls for protection and draft control

Before You Choose

5 inch twin wall flues are primarily required for homes without a chimney or where your stove will be outside an existing flue. Check your stove type, property layout, and local building regulations. Professional installation by a HETAS-qualified engineer is strongly recommended.

Explore Our Range

Browse our 5 inch twin wall flue pipes and accessories to find everything needed for a compliant, safe installation. For guidance, see our stove installation guide or contact our HETAS-trained team on 0161 376 4191.

Visit our Showrooms

Explore our full range of wood burning stoves, BBQs, grills and outdoor heating at our showrooms.

Cheadle

Stanley Green Retail Park, 
Earl Rd, Cheadle
SK8 6PT

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Stockport

137 Wellington Road North
Stockport, Cheshire
SK4 2PF

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Bromsgrove

15 Sherwood Rd
Bromsgrove
B60 3DR

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Package includes: 

Woodford Carrington 5 Multifuel Stove (Ideal Home Award winner), Flue liner Pack (flue liner, adapter, chimney cap), Fitting Kit (stove pipe, register plate, carbon monoxide detector) Full Installation (by a HETAS registered installer)