The Pina Zangaro Polyester Sheet Protectors are high quality folded protectors that feature a strong black liner page. They are manufactured to the highest industry standards. They feature multi-rings for portfolio use as well as 3-ring binders.
Note:
Polyester sheets have hole-spacing which allows them to fit into screwpost books, but this is not recommended since the pages would not lay flat.
Approved by the Library of Congress for archival storage
Lined with 10 pt. black acid-free and lignin-free paper
Top and bottom loading
Both plastic and paper pass the Photographic Activity Test (PAT) and meet all ANSI requirements for archival storage