Twin Wall Adjustable Starter Length with Increasing Adapter 500mm 5 - 6 Inch MB

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£193.73
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  • Specifications
    Guarantee 30 Years
    Material Stainless Steel
    Flue Parts Adaptors
    Finish Options Black
    More Colours No
  • Product Sizes
    Twin Wall Adjustable Starter Length with Increasing Adapter 500mm 5 - 6 Inch MB
    Flue Diameter 5-Inch (125mm)
    Overall Height 500mm
    Distance to Combustibles - Sides Enclosed: 70mm - Unenclosed: 50mm
  • Description

    PLEASE NOTE THE DIAMETER ADVERTISED REFERS TO THE INTERNAL
    MEASUREMENT OF THE FLUE, NOT THE EXTERNAL MEASUREMENT.

    Our 500mm adjustable length with a built in 125 - 150mm (5" - 6") increasing Twin Wall adapter is designed to sit on top of the stove to give a clean look. This can also be used with vitreous enamel pipe if needed. With its easy to install push together design it makes it the number one choice for installers nation wide.

    We are so confident in the quality of our Twin wall chimney system it comes
    with a 30 year no quibble warranty and customer satisfaction guarantee.

    Features:
    • 30mm mineral wool insulation;
    • Core material stainless steel grade 1.4404 (AISI 316L);
    • Highest temperature test of T600 nominal and T1000 maximum;
    • 30 year warranty;
    • CE marked and G70/G50 rated depending on enclosure status;
    • Bespoke parts made to order;
    • Push-together installation, popular among installers;
    • Quick clip locking bands.

  • FAQs
    can the twin wall adjustable starter length with increasing adapter be used as the first start to the outdoor flue so it can be swept?
    Question by: nicola ridge on 2 Feb 2026, 16:16
    Hi Nicola,

    This length includes an in-built increasing adaptor to connect up from a stove or single wall pipe to twin wall flue.

    If you are planning to have this as the first twin wall component off of a length of single wall pipe then this may be used.

    We do sell discreet cleanout lengths if these would be of interest: https://www.tradepriceflues.com/dura-twin-wall-discreet-cleanout-150mm-black.html#product-specifications


    Answer by: Jack on 2 Feb 2026, 16:34