Our slightly oversized 5 mil laminating pouches for thermal laminator machines are designed to fit standard letter-sized pieces of paper. At 9 x 11.5 inches, they provide all of your projects with an extra layer of protection. Protect photos, memorabilia, flashcards, certificates, recipe cards, and more. Perfect for classroom organization, our dry-erase-friendly pouches also help reduce the amount of printed paper used throughout the school year. Depending on your project, the difference in the MIL of each laminating pouch can make a huge difference. 3 mil laminating sheets are not as thick, which allows the final project to have a more flexible feel, whereas a 5 mil laminating pouch is thicker and provides your final project with a stiffer finish. These laminate pouches work with any thermal laminating machine.