Shelf File Boxes are the preferred method of on-shelf filing, which has been around for as long as the filing concept itself. It remains the cheaper method of storing files, simply because there is no need for expensive ongoing costs that are often associated with other systems, such as “hanging” systems. There have, however, been past problems with on-shelf filing, such as selectability. This is sometimes caused by files falling all over the shelf and each other, when other files are removed. One of the old ways of dealing with this problem is the “divider plate” which is fixed between each shelf, forming a dark, inflexible, fixed height pigeon hole. More recently, this was improved with the introduction of the Wire Shelf Divider or Toast Rack which maintains tidy on-shelf filing. The Toast Rack works fine with numeric filing systems where each file is limited to around 10% growth after initial storage. However, the Toast Rack becomes more of a hindrance than a help, when used for alpha file systems or systems where file sizes are ever increasing. When using the file box, making more room when the system jams up, is simple. Just select the box at the end of the problem area, move it down to the next shelf, slide the others along to make room beside the problem box and place a new box in the space provided. It may be necessary to move one box from shelf to shelf to compensate for the above addition, but this only takes seconds. Compared to what is required when adjusting files in Toast Rack and Hanging File systems, this is effortless.