When we brought our Sheltie puppy home 2 years ago, we borrowed my son’s large wire crate. It became her safe place. However, I wanted my living room back, so I ordered this crate. I love it! The MEDIUM fits our Sheltie w a few extra inches to spare. She has adapted to it and I have my living room back! It’s not a problem for us, but the latch is flimsy...see photos. My husband put it together in a relatively short period of time. I highly recommend this for dogs that are crate trained.