25mm insulated twin wall multi-fuel system chimney

DUALINOX is a Multi-fuel ‘system chimney’, ideal for solid fuel stoves and cookers.

With a simple range of chimney components & supports, it is mainly suitable for installing external to the building.

It is available in 2 diameters (Ø130 & Ø150).









Product details

> The easy push-fit joint being fully insulated ensures no hot spots.

> Every component is supplied with a Locking Band and a safety ring that guarantees the security of the joint for life.

> Quick and easy to install.

> Wide range of accessories i.e. Terminals, adjustable lengths, elbows, tees, brackets & supports.


Complete range of ancillaries available

> Air-vent, fire-cement, fire rope, smoke pellet, mastic, selant, CO alarm, paint, insulation bag, thermometer, moisture meter, clay pot and more.


All of the products offered by Cheminées Poujoulat have been rigorously tested in every configuration by the CERIC Laboratory to ensure they meet highest standards (Building Regulation Document J - Amendments to Approved Documents).


Technical data

> Max. Temperature limitation: 450°C
> CE marking: 0071-CPR-0038
> Designation: T450 N1 W V2 L50040 G50/G65* - Inner wall thickness: 0.4mm > Insulation: 25mm mineral wool mattress insulation.

*Minimum distance to combustible materials of 50mm in a non-combustible enclosure or 65mm in a combustible enclosure.

Compared to 135°Tee the ECTV 45 allows

> Safer install.

> More aesthetically pleasing.

> Cost effective solution.

> Sweeping up and down the flue.

Installation & regulation


> Lateral (wall bracket) every 4 metres.
> Deadweight (wall support) every 16 metres.
> Freestanding up to 3 metres above last support with Reinforced Locking Bands (2 metres as standard)

Chimney passing through the ceiling floor level

> Joints between chimney sections and associated locking bands shall not occur within any ceiling joist space or wall/partitions.

> Fire-stops or Fire-stop/spacers shall be fitted to the frame formed between compartments through which the chimney passes.

> The lower end of the chimney shall extend at least 150 mm below a non-combustible ceiling, but the required clearance distance from combustibles to the connecting flue pipe must also be respected, usually three times the diameter of the connecting flue pipe eg. 150 dia. pipe = 450mm clearance to combustible.

> Where the flue pipe connects to the chimney the connection shall be made using our Pipe Connection Length (EDP) or using our P Adaptor which can be supplied with any spigot diameter so suit.

Distance to combustible materials

> 65mm clearance to combustible materials (50mm in a non-combustible enclosure) with a ventilated fire-stop plate in the room of the appliance.

> 100mm clearance to combustible materials with a solid fire-stop plate in the room of the appliance.


> The chimney system shall have no more than 4 bends in total. 2 bends in the chimney and 2 bends in the flue pipe connection.

> The offset shall provide a change of direction no more than 45° from the vertical.

> The run of chimney between bends shall not exceed 20% of the total chimney length.


> It is important that chimneys serving all types of solid fuel appliance are swept regularly to remove soot, tar and potential blockages.


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