Adorama Archival Plastic Storage Binder Box with 3 'O'-Rings, Color: Black, Case of Twelve Archival quality - rigid polypropylene - No PVC Features 1" O-rings, positive snap locks and a flexible hinge Super tough - dust and moisture resistant Stylish textured finish is available in black or white Safe storage for prints, slides, CDs or negative pages up to 9-7/8"W x 11-3/4"H