Pina Zangaro Landscape Polyester Sheet Protectors 11" x 17", Pack of 10 Sheets.

Polyester Sheet Protectors... The folded polyester sheet protectors represent excellent clarity and excellent value. Packed in tens in a metallic, reusable bag.

Archival grade DuPont polyester (polyethylene terephthalate). High transparency and tensile strength, non-yellowing at ambient temperatures, chemically and dimensionally stable, resistant to most chemicals, moisture and abrasion.

Approved by the Library of Congress for archival storage. 10 pt. black acid and lignin-free paper. Both plastic and paper pass the Photographic Activity Test (PAT) and meet all ANSI requirements for archival storage.