BirdCageLiners - Extra Large Cages - Custom Size - 150 Pre-Cut Sheets - 60 Pound Paper Now ordering a custom cage liner is easy - Click on "See All Buying Options" then Click on "Customize Now" - Fill in your custom size and add to cart. Dimensions not to exceed 30 x 32 inches Please measure the inside of the cage pan, not the outside of the cage for proper fitment.