Explore various cable tray types and sizes for electrical installations. Learn about ladder, perforated, solid-bottom, wire mesh, and channel trays in this complete guide. Wire. Medium Duty Cable Tray Couplers Wrap over design - fits to the ends of Medium Duty Cable Tray For Joining 2 lengths of cable tray on a straight run Pre Galv Steel - British Standard Specification. Use Cable Tray Nut / Bolt for Fixing to Tray (PNB612) Compatable with Brands such as : Unstrut |. As the industry leader in cable tray, Eaton offers one of the widest ranges of B-Line series cable management solutions available in the market today. com – the reliable choice for safe, organized, and standards-compliant routing of power, data, and control cables. With over 20 years of experience.