Miracle File Boxes are shipped flat in a 6 Pack until required for usage in the home office or business Dimensions: 15' x 12' x 10' to fit both legal and letter size folders to keep files easily accessible Slides into place for easy assembly see picture for details on constructing the box Double walled on all sides with a lift off lid for easy access and closure when files are not in use Printed for labeling on the exterior to easily identify file contents, year, and other important information