Masaccio Duralong Special Self-Assembly Box with Back Light Gray 1.4 mm 360x260x100 mm

The “Masaccio” self-assembly back boxes are made from Duralong Special archival board and Duralong Basic economical board, ideal for long-term horizontal storage. The recessed spine ensures safe insertion and removal of items and provides a microenvironment protected from chemical-physical changes (dust, light, environmental pollutants) within the box. With double-thickness walls on three sides of the base and one lid, the box is extremely strong and rigid. The small self-locking flaps that attach to the double wall make assembly easy.