I'm Loving on this well built and affordable crate that works perfect for our 75 lb Yellow English Body female Lab Lola. She was a rescue dog and spent her first 3 years with 5 other dogs in a truck trailer.... So yes, she is kinda not into closed in ANYthing, and has eaten doors to get out, when we first got her. It is easy to assemble. It is sturdy and strong. The under tray is sturdy. It doesn't fly out. It has been a good couple of months to make sure before I wrote this review because I wanted to make sure. Awesome crate.