5" Adjustable Length (560mm-920mm)

Our Price: £87.10 Incl. VAT: £104.52

Availability: In stock

Product Code: TWAJ105

5" Adjustable length 560mm - 920mm T/W



 Twin wall Warranty

5" Adjustable Length from 560mm to 920mm for use on solid fuel and gas/oil appliances. eg: woodstoves, gas coal effect fires/oil boilers.

Made from 304 Stainless Steel outer and 316 Stainless Steel inner. It is fully welded and has CE approval.

(Please note: We base all of our twin wall system on the internal diameter measurement).


Same day dispatch if ordered before 2pm.


Adjustable length 560mm - 920mm T/W


View Our Installation Guides:

Bungalow Internal Installation

Bungalow Installation guide

External House Installations

External Installation

Straight Internal Installation

Ventilation Installations


Our twin wall insulated is a simple push-fit  joint system. Build your system by placing each piece on top of the previous and push together to make the join. This is the simplest system to construct on the market today.

Building Regulations

Download Building Regulations Document J (effective October 2010) below

Download Document J

(Right click link, then select "save file as..")