There are several things to consider when labeling warehouse racks. Depending on the size of rack units, you may want to decide whether to label or tag individual tags or divide each rack into sections and label each section. Once that’s done, you should think about identifying each level, which is especially relevant if there are several levels in a rack. When labeling rack levels, it may be a good idea to follow the bottom-up approach and use at least two-digit numbers to facilitate easy scale-up when such a need arises. You should also think if you wish to follow serpentine or standard labeling models, depending on whether works should double back the aisle or not.