(500) 12" Record Outer Sleeves - PREMIUM - 4mil Thick Made with Archival Quality, High Clarity Virgin Polyethylene EXTRA HEAVY DUTY 4mil 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)