Museum Grade Storage Boxes for 16 x 20" Photos/Prints/Posters. 16-3/4 x 20-3/4 x 3". TAN. Drop front. Acid-Free Barrier Board.

Museum Grade Storage Boxes
20-3/4 x 16-3/4 x 3"
TAN.Drop front.
Use for Photos/Prints/Posters.

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 indefinite storage of prints & photos.