These are a variation on standard acidic file boxes seen in many libraries, or curved-side archival pamphlet file boxes. They were designed in conjunction with an archivist at a leading New England library. Advantages are that the full covers are protected, and only the spines show in the open side. Further protection from light and dust may be found by turning the boxes against the back of your shelving, and using labels to note the contents on the back panel. They are offered in our .060 Lig-free I board. Serial boxes ship flat; therefore they are easy to keep on hand in your stockroom and simple to set up when the need arises. Each package contains 5 boxes.