Lightweight, low cost, unique design, easy installation, good heat dissipation, and excellent breathability. It is suitable for laying cables with a generally larger diameter, particularly for high and low voltage power cables. The maximum allowable uniformly distributed load and deformation of ladder-type cable trays under different spans. Ladder-type cable trays are equipped with protective covers. If protective covers are required, they can be specified at the time of ordering or ordered according to the protective cover model. All accessories are compatible with tray-type and trough-type cable trays.