Archival Newspaper Storage Box 13 x 18 x 3" BLUE-GRAY Archival Barrier Board with acid-free white liner.
These 60 point thick boxes are acid-free, lignin-free and have a pH of 8.0-9.0. They have a 3% calcium carbonate buffer and reinforced metal corners for excellent stacking strength. Museum grade archival. Ship assembled.
13 x 18 x 3"
Blue-Gray Archival Barrier Board.
Material is Acid-free, Lignin-free & Buffered."/>