“Parmigianino” folder boxes are made from DuralongSpecial conservation board. Ideal for vertical storage of loose documents or documents put inside folders and envelopes. They are produced in one piece with two large flaps end two small flaps. They are designed to be completely closed and then to protect the contents from dust. They are equipped with three herringbone cotton tying tapes, glued with a Ph neutral adhesive and white conservation paper.