Shelf Dividers Keep your shelves well organized and orderly with these 8 in.(20.3 cm.) high, pressure fit dividers. Order by shelf width. Available for Chromate or Black Epoxy shelves.Shelf Ledges Promote safety in your operation by using these heavy - duty ledges to keep items from protruding or falling from shelves. Ledges fit back or sides of shelving units. Ledges can be stacked on top of each other for additional height.