Museum Grade Storage Boxes
24 x 36 x 3" BLUE-GRAY.Drop front. Use for large prints and posters.
The archival material used for these boxes is 60 point, solid-core, acid-free, lignin-free cellulose fibers. It is buffered with a 3% calcium carbonate, which blocks migrant acids, The boxes have a pH of about 8.5. They have metal-edged corners and ship assembled. Boxes have passed the Photo Activity Test certifying that they are safe for the indefinite storage of photos.
Acid-Free, Lignin-Free, Buffered. "/>