Horizontal elbows provide directional transitions in cable tray systems, with 4"–7" rail heights, 6"–36" widths, and 12"–36" radii. Available in ladder and solid bottom aluminum designs. Class 1: Designed for use with NEMA Classes 12B. Ensure your cable tray solution is designed for your application, with our vast range of ladder tray fittings. I hereby consent to the processing of my personal data in accordance with EU Regulation no. Cable tray accessories: horizontal elbows, vertical elbows, and straight connectors Cable tray accessories, including horizontal elbows, vertical elbows, and straight connectors, are essential components for efficient and secure cable tray installations in various industrial and commercial. Diagonal Corner R=75 mm (Standard) 2. Diagonal Corner R=150 mm (Request) 3.