With a drop front design, the 18.5 x 24.5 x 1.5" black Museum Drop Front Box allows easy access to your prints, while a removable lid reduces table space needed during presentation. The interior of the box is lined with a 10-pt. card stock that is acid- and lignin-free. With a depth of 1.5" it can accommodate between 60 to 70 unmounted prints or 10 to 12 matted 4-ply prints. The adhesive used in construction is pH balanced, and the archival box has passed the Photographic Activity Test (PAT), which makes the box suitable for long-term storage.