Constructed of heat-treated aluminum and pre-drilled for expansion and mid-span splice applications, 13 in. wide T&B® Cable Tray Super-Duty Splice Plate™ eliminates need for additional supports at expansion joint. Reinforced design provides rigidity, resistance, and strength and allows for true contraction and expansion under full loads. Nylon washers facilitate movement by reducing friction and do not require lubrication of side rail during installation/maintenance.