15.515 cm, pet door pet mate tunnel for cat / dog, 4 functions: prohibited in & out / allowed in & out / only in / only out, size M, Sturdy and quiet pet door, goes well with wooden and glass doors and windows. Interior dimensions: (height * width) 15.515cm (Please measure your cat or dog’s size, don’t buy the wrong size); - External dimensions: 22.3 * 19.2 * 5.5 cm (width * height * thickness) There are pre-holes and screws, very easy to assemble and disassemble. Internal frames are soft flannel, able to prevent your cat or dog from being scratched, and also be able to clean their fur
