This is a folding-door type pet door for large dogs, with an entrance size of approximately 400mm x 300mm. - Type: Folding door - Size: For large dogs - Dimensions: Approximately 400mm x 300mm Thank you for looking. I mistakenly purchased this a few days ago and was unable to return it, so I am selling it. It is made in Japan. The purchase price was 9600 yen. I bought it on Rakuten Ichiba. I am selling it at a significantly reduced price, so it's a good deal for anyone who needs it.