Masaccio Duralong Special Self-Assembly Box with Back Light Gray 1.4 mm 350x250x90 mm

“Masaccio” fold-down spine boxes are made from Duralong Special archival board, ideal for long-term horizontal storage, and the economical Duralong Basic board.
The drop spine allows for the safe insertion and removal of works while providing a microenvironment inside the box protected from chemical and physical changes (dust, light, environmental pollutants).
It is extremely strong and rigid thanks to double-thickness walls on three sides of the base and one lid.
Small self-locking flaps that attach to the double wall make assembly easy.