Print File 2x2-20H holds twenty 35mm mounted transparencies. I.D. strip for each slide, 8 mil polypropylene. Top loading when used in hanging file. 25 Pack Dimensions: 11"W x 9 11/16"H. 8 mil polyethylene. Strong continuous seams prevent negative hang up. Archival quality polypropylene - NO PVC - safe for long-term storage