Twin wall flue adjustable wall support. Used to connect to elements at the joints using its integrated locking band and also fixing the chimney to the wall. This wall support allows regulation between the chimney and the wall from 70mm to 120mm. A wall support has to be installed every 2 or 3 metres. This suppoort withstands both the lateral and vertical (weight) of the flue. Locking band required with this part.