The 90-degree UP elbow is a 300mm vertical lead off with an internal lid, so that cables within the elbow can be accessed. This is usually used where cables are to be installed vertically. This assembly is made up of: 2 x Part No: TC1279-283A and 1 x Part No: TC1279-287A. There are two 300mm outlets, which use slotless joiners (Part No. TC1279-287A), that are available separately.