The FQH series cable tray boasts excellent insulation, fire resistance, corrosion resistance, and suitability for a wide range of environments. ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray. It is also lightweight, high load-bearing, safe, and reliable, reaching a leading domestic technological level. Each cable tray type performs a different function and comes in various materials such as aluminum. Explore various cable tray types and sizes for electrical installations. Wire Mesh Cable Tray. Ladder cable trays consist of two longitudinal side members connected by individual transverse members and provide solid side rail protection and system strength with smooth radius fittings and a wide selection of materials and finishes.