Twin Wall Insulated Chimney System

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  • STI Chimney Stack

    STI-picture28110
    Self supported Therminox chimney stack designated as suitable for use with all gas, oil, pellet and wood appliances. STI Chimney Stack Kits from £312.00 + vat.  Please call for our best trade prices and other kit options and fittings.

    Self supported Therminox chimney stack designated as suitable for use with all gas, oil, pellet and wood appliances.

    STI Chimney Stack Kits from £312.00 + vat. 

    Please call for our best trade prices and other kit options and fittings.


  • Therminox TI – ZI

    therm-dom-picture2779
    Mult-fuel twin wall insulated chimney system, Gas, Oil, Pellet and Wood burning appliances. Therminox TI - 950mm length, 150mm diameter, £83.68 + vat each - For external use Therminox ZI - 950mm length, 150mm diameter, £66.95 + vat each - Only suitable for internal use.  Please call for our

    Mult-fuel twin wall insulated chimney system, Gas, Oil, Pellet and Wood burning appliances.

    Therminox TI – 950mm length, 150mm diameter, £83.68 + vat each – For external use

    Therminox ZI – 950mm length, 150mm diameter, £66.95 + vat each – Only suitable for internal use. 

    Please call for our best trade prices and other options, diameters and fittings


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