Our premium grade Portfolio Boxes are made from a variety of archival boxboard and all have a drop back spine so easy to lay-flat when using. Covered with Library Buckram cloth or paper with a choice of colours. Available fully lined in acid-free paper to ensure protection for their contents. Optional ring metals to hold different styles of insert pockets to help in organising the content. Options for different labeling, hand covered frames or metal label holders. Ideal for storing photographic collection and other precious items. Available lined throughout in photo-safe acid free papers or other archival linings and made from a range of different board thickness from 1300 microns to 2000 microns.