US Cover Sleeves SUPERSAFE Museum Grade 4 1/4 x 7 3/8 Pack of 100 MG460

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This listing is for a pack of 100 Supersafe Museum Grade US Cover Sleeves for 4 1/4" x 7 3/8" covers (MG460). Supersafe MG (Museum Grade) series US Cover Sleeves are made from 4 mil Mylar. The Mylar polyester film makes these US Cover Sleeves ideal for long term storage. These holders open on the left and right and also can be opened at the top for easy insertion. The top folds over for added protection. Each U.S. Cover Sleeve holds a single cover. These US Cover Sleeves are new from our inventory.