I used these to sort SAPIX cram school printouts. As you can see in the photos, there are marks where I peeled off the print name labels that were on the headings. There are 29 in total. Orange: B4 x 6 Green: B4 x 14 Light Blue: B4 x 6 Gray: A4 x 3 Size: B4 Dimensions: 378mm (H) x 272mm (W)