The CMR PVC Tube is manufacturerd in six colours Blue - Red - Black - White -Yellow and Green. The tube is 8mm outside diameter and 4.7mm inside diameter. It is very rugged to be installed on site in standard cable trays. A complete range of T-pieces and straight connectors are available to make a secure and tight tube fitting. The tubing is used substantially in many installations to connect the pressure or velocity pressure to the CMR Pressure and Volume Transmitters. A variety of Silicone tubes are also manufactured in red and blue colour only to suit the internal Panel installations.