The 45-degree down elbow is a 220-mm angled lead off with an external slot, so that new fibres can be installed within the elbow and existing fibres removed, where necessary. This is usually used where cables may be already installed and either an angular duct feed off or an alignment adjustment is needed. There are two 220-mm outlets: one is fitted with a special joiner (Part No: TC1279-25SP). The other side, can use either: a standard joiner (Part No. TC1279-25) or slotless joiner (Part No: TC1279-250A); which are available separately.