Museum Grade Storage Boxes for 16 x 20" Photos. 20-1/2 x 16-1/2 x 3". BLUE-GRAY. Drop front. Acid-Free, Lignin-Free, Buffered.

Museum GradePhoto/Print Storage Boxes
20-1/2 x 16-1/2 x 3"
BLUE-GRAY.Drop front.
Use for 16 x 20 prints and photos.

The archival material used for these boxes is 60 ptpoint, 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.