I have a 15 lb Chihuahua-Chow mix. He cannot be contained in a metal kennel without doing damage to the door or frame and scooting the tray out of it. He completely pulls down metal and wooden gates, spring loaded or tightened to door frames or hallways. However, this Sky Kennel crate has finally solved the problem to contain him when he needs to be contained. 

He has not been able to damage the door. He seems less stressed being contained in it which has been a huge relief. We leave the door open at all other times and he actually seems to enjoy sleeping in it, going in all on his own, no coaxing. It is a comfort for us to be able to leave him alone in it when necessary knowing he is safe and less stressed.