Pina Zangaro Polypropylene Sheet Protectors 11" x 8.5", Pack of 10 Sheets.

Polypropylene Sheet Protectors... The classic welded polypropylene sheet protectors have become the industry standard for quality. Packed in tens in a metallic, reusable bag. Archival quality heavy-duty .0045 polypropylene.

Inert, unplasticized, heat resistant and chemically stable. 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.