Industrial racking (steel racking, pallet racks, etc) is everywhere. They are the shelving units of the industrial world. So it only stands to reason that there will be some applications where liquid (or other materials that might leak) is stored on racking.
For those situations, the Ultra-Rack Containment Trays can be easily slid underneath the bottom shelf and used to capture small leaks, drips, and spills. One, two and three tray systems are available to fit a number of different widths and the optional connector allows units to be connected to make any size system needed.