I didn't even see that part. Anyhow, it is the wrong one. I opened it up, I think Koji would have to duck to get in. Opening is a little bigger than 12". I opened it and was like, whoa, this this is tiny. Is this what I ordered. And then said, "a lady on the board said it was almost standard size, I think either she's mistaken or I am". That lady would be you. My second thought was, well, she does run TDAA. LOL. But no, I knew it was wrong. The opening is TINY!!!! It's definitely the puppy chute.