Safe and QuietThis cat flap allows your cat to enter and exit any door freely in both directions without any obstruction. You don't have to worry about the cat's tail or paws getting stuck in the door when you open or close the door. Perfect Cat DoorThe inside diameter of the cat door is 18cm , which is small and light, suitable for kittens weighing less than 30 lbs. Cute cat doorThe cat door is in the shape of a kitten, which is very cute Easy InstallationAfter opening the door with a saw and an electric drill, disassemble our cat flap into two parts, install it on the front door and back door respectively, and finally install the screws and cover -dust on the cat flap. Wide range of applications The cat flap allows your kitten to play freely at home.