CLOSEOUTS → Photo & Slides → Museum Grade Boxes for 16 x 20". 20-1/2 x 16-1/2 x 3". TAN. Drop front. Acid-Free, Lignin-Free, Buffered. 60 Pt. Board.**CLOSEOUT 20% OFF**
Museum Grade Boxes for 16 x 20". 20-1/2 x 16-1/2 x 3". TAN. Drop front. Acid-Free, Lignin-Free, Buffered. 60 Pt. Board.**CLOSEOUT 20% OFF**
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.