Oversize objects need to be stored according to their needs. Map cases should be made of chemically stable materials such as anodized aluminum. Wood requires barrier materials and sealing. Boxes should be buffered, lidded and lignin-free such as the Solander boxes, "clamshell" style or "drop-front". Folders are the least pricy storage enclosure. They shouldn't be overcrowded and clearly labeled with waterproof ink to eliminate damages. Melinex encapsulation is a good solution for fragile and frequently handled materials that are not acidic. Mats and folders with polyester film interior covers can also be used. Oversize sheets can be rolled on a lignin-free tube or hanged. Folding and sectioning are not recommendable.