The Shieldmaster 250-350mm adjustable length of twin wall pipe is used to create the main run of your chimney system, or more commonly used to go through a wall. This part comes with a locking band to easily and quickly connect to a previous Shieldmaster part. This is a fixed length of pipe and cannot be cut down.
Shieldmaster does not need any additional silicone or sealants to seal the joints. It has a unique push-fit locking system to make connecting and disconnecting really simple.
Please note - as with all twin wall parts the diameter quoted is the internal diameter - the external diameter is 2 inches larger due to the surrounding insulation.