Sleeves Mylar Polyester Letter Heavy Weight Clear Box of 50

These sleeves are new 'old stock' - when Mylar was the polyester of choice for archival sheet protectors. They are made by C-Line and we have several boxes left of this product. The sleeves are unpunched and measure 11x8.5" with opening on top and bottom on the 8.5" ends. They're sleeves but C-Line called them "Mylar Sheet Protectors - Clear, Heavy Weight, Unpunched." You get a box of 50 protectors. These protectors have a black insert. We suggest you remove them, because they are untested for safe long term storage archival use.

The design of these sleeves are similar to the polypropylene sleeves that we have - they are Fold Locking on one long side.