Ladder tray systems are a cost effective alternative and allow for easy installation of cables by electricians as well as future access for adding or removing cable runs. All models are UL-classified and meet National Electrical Manufacturers Association (NEMA) VE-1 standards for metal cable tray systems. Cable LadderHL3 with strengthening cross bars is different from the HL1 of perforated cross bars and being of the larger loading heavy .Cable Ladder is permitted in a variety of indoor and outdoor applications. Cable Ladder provides much greater spacing between support hangers than for most other systems,providing savings in support costs and labor installation, H.S.offers a wide range of components of cable ladder, 4-way cross is one of the components used as the connector of the 4 branches , HL3-C Cross is the same as the straight through part with the strengthening cross bars and much larger cable load than Hl1 & HL2 Cable ladder. Standard finish of H.S. Cable Ladder HL3 as below, customize available and in varying width and load depth for many applications including primary service entrance, main power feeders, branch wiring, instrument and communications cable..,