I’ve upgraded from the smaller one to the tallerlarger one because of an incident that occurred with my large breed dog. The space in between the panels should be modified in my opinion because my dog got his leg caught and it could result in needing his entire leg amputated due to the tissues becoming necrotic. However, this type of kenneling has been used for a long time and replicated the AKC brand version exactly. I’m giving this product a 5 star review because it matches the design of industry leading brands but cheaper and, still super easy assembly and good quality product for inside use. They’d be a step ahead seeking a design modification to prevent the incident that occurred with my dog. also, wayfair CS handled the problem quickly and cared about the wellness of my dog. The size suggestion has also since been added.