These papers are precut to fit your cage. Put several sheets in and take the top one off at each cleaning. The wax coated side repels fluid and prevents soking through. Birdie Tip: Put seven sheets of cage liners in the tray of your cage. Take out the top one each day. When the last one is removed at the end of seven days you will be reminded to clean the rest of the cage on schedule. This will make cage cleaning easier and the cage will remain cleaner. Bird Brain Information: There are 9 species in the Poicephalus family. These are Cape parrot, Jardine's parrot, Senegal, Brown-headed, Red-bellied, and Meyer's parrots, Rueppel's, Niam-niam, and Yellow-faced parrots. 30.5 x 22.5 Cage Liners 150ct CCCC540$49.99