Size: Passage by opening: 6.89*6.89*1.38'' Outer size: 10.55*9.05*2.17'' Prepare a warm house for pets wandering in the cold night Do you have an animated cat fish kitten Cat Porte l for cats under 30 pounds. This patented, patent-pending Cat Litter Pet Door makes it easy to touch Katzbet's cat litter box. It can also be installed in the garage to help stray cats get through the cold night. Our advantage: This ingenious cat crosses is ideal for the bedroom, bathroom, laundry room, basement, mud rooms, cabinets and more. Purrfect for beffective breeds like Maine Coon, Birman, Bengal Cat, American Bodail and Ragdoll. Easier to install. Promoting complicated puss holes requiring messy adhesive, pens and tapes. Your iCuso cat door easily installs in just 15-20 minutes. Just bolt on both sides, top with bolts, and they're set. All hardware included. Safer than most. Little time wasted with the bolt-not-fluffy adhesive. This sturdy entry door for cats will never tear from their interior