ARCHIVAL PRINT PROTECTORS are the ideal storage and protection for prints, maps, photographs and documents that deserve an extra-safe environment for long-term storage. They are made from heavy-duty, . 010" clear polypropylene with reinforced black nylon binding on all sides (even the open edge). Sewn edges and an acid-free black insert add stiffening strength. First dimension is the opening edge.
Guaranteed archival quality.
6 per pack.
What more do you want to know?
LOL .. you got me .. I immediately clicked the links to the different sizes below then I looked for the info
Maybe I should pay a bit more attention next time