This cross connector is used to establish a right, angled intersection between 220 mm and 100mm duct. i.e. 2 arms of the connector are connected to both 220mm and 100mm duct, or other components, using either: standard joiners (Part No: TC1279-25 and TC1279-27,Telstra No’s: 035300515 & 035300514) or slotless joiners (Part No: TC1279- 250A and TC1279-248A). NOTE: Care should be taken not to lay more than 50mm depth of pigtails or patch cords in troughing, particularly where they cross each other at right angles. This may occur with this connector.