(500) 12" Record Outer Sleeves - INDUSTRY STANDARD 3mil Thick Polyethylene - 12 3/4" x 12 1/2" Made with Archival Quality, High Clarity Virgin Polyethylene HEAVY DUTY 3mil Thick, Fits Single AND Double Gatefold Records 500 Sleeves Total, Bagged by 100's 12-3/4" x 12-1/2" (323.85mm x 317.5mm) Flush Cut with Lip For Easier Insertion (no flap)