Museum Grade Storage Box Blue E-Flute Corrugated Cardboard
11-1/2 x 15 x 3" Use for 11 x 14"Images. Drop front.
The material used for these Archival Boxes is a strong E-flute corrugated board that exceeds 200-lb-test. It is acid-free; lignin-free, and buffered with 3% calcium carbonate. The boxes have a drop front, metal-edged corners for stacking strength, and ship assembled. Boxes have passed the Photo Activity Test certifying that they are safe for the indefinite storage of photos.