This elbow assembly, down, 90°, (incorporating the duct break-out component), is used to provide a safe exit for optical fibre cords to equipment, at any point in a 100, 220 or 300mm duct system. It allows optical fibre cords to feed vertically down to a rack. The elbow clips straight into a cut out, 2 cuts wide x 75mm deep, made by the cut out tool (Part No: TC1279-231KIT). The second cut down is made to the top of the ducts, highest, longitudinal rib. This 220 x 100mm duct, elbow, 90°, down, can accept any standard 220mm x 100mm duct item, using a standard or slotless joiner. It can also accept an end cap (Part No: TC1279-457) that allows two large diameter convoluted tubes to be connected to it. Each tube is Ø75mm ID/Ø88mm OD mm (Part No: TC1279-458). With a prepared square end, each tube screws into the mating outlet port. The 90°, down break out has a snap-fit, removable cover (Part No: TC1279-455). Accessories/other items available separately.