Thank you for viewing. This is a pet door, size M and two size L. I purchased several, but these were unused, so I am selling them. I opened the box for the purpose of listing them. The cat has not used them. Returns are not accepted, so please check the photos and purchase only if you are satisfied. I purchased them from Yahoo Shopping, so you can find more details if you search there. Please refrain from purchasing if you are concerned about minor details. They are in boxes, and I will ship them as is with simple packaging. Thank you for your understanding.