“Lorenzetti” spine boxes are made from Duralong Special archival board, ideal for long-term horizontal or vertical storage. They allow safe insertion and removal of works and provide a microenvironment inside the box that is protected against chemical and physical changes (dust, light, environmental pollutants). There are single walls on three sides of the base and lid. Easy to assemble thanks to small self-locking flaps that attach to the wall and a practical locking system to close the box.