Vertical inside elbows guide cables upward in tray systems, with 4"–7" rail heights, 6"–36" widths, and 12"–36" radii for varied installation needs. Vertical inside elbows allow for a change in direction upward. Rail heights range from 4" to 7", widths range from 6" to 36" and radiuses range from 12" to 36". Ladder tray type. Fittings, cable trays, screw connection - Vertical bends, screw connection. Usage: is used to complete the whole project as it is one of the cable tray accessories, that make the cable go through all available space easily as it can go from the high path to lower one, and the opposite, with different directions too. As there are types: ( Vertical 45-In – Vertical 45-Out –. The 90° Vertical Elbow provides essential support and enables seamless cable management throughout your cable routing system. Class 1: Designed for use with NEMA Classes 12B and 12C cable trays. Standard depth is 4" with optional depth of 6". Model numbers are 12CTU90 (12" wide), 18CTU90 (18". ◆ CT50×100-IRS, CT stands for cable trunking, IRS stands for 90° vertical up elbow, 50×100 stands for height 50mm x width 100mm (outer dimension).