Pallet rack systems are foundational for businesses storing everything from raw materials to finished goods. One thing everyone can agree on is that rack is built to last. Because of the durable nature of pallet rack, pre-owned systems and components are a desirable commodity. Systems that no longer fill a need for one business can prove very valuable for another. Yet, with a large number of system types, design styles, and manufacturers it’s not always easy to match pallet rack columns with compatible beams and fasters. It can also prove challenging when it is necessary to add to existing systems. One way to approach the challenge is to examine the punching pattern on the column.