Archival Photo Box Spacer 5" tall x 23-3/8" long. Made from Blue E-flute Corrugated Cardboard. Fold on scores as box fills up.

Archival Photo BOX SPACER 23-3/8 x 5" Blue E-flute corrugated cardboard. Acid-free, lignin-free with a 3% calcium carbonate buffer. Fold spacer on sc...