These acid-free covers without ligninha are the ideal way to pack and protect maps and posters, or other large documents.
 Made with acid-free cream cardboard, with a pH of approximately 8.5, they reduce the possibility of discoloration of the paper and fading of the inks. Simple cut, suitable for convenient storage of documents, maps and posters. Reinforced with acid-free tape.
 Available in the following sizes: 457mm x 610mm, 508mm x 610mm, 508mm x 762mm, 610mm x 914mm, 610x1016mm, 762x1062mm, 813x1016mm, in packs of 10 units.