The Midwest Life Stages Double Door dog crate receives its name from the FREE Divider which comes with the dog cage. By using this divider panel you are able to minimize the puppies space in the crate while the dog is young. Then as your puppy grows into a full size dog, you can move the divider panel providing your pet more room in the cage. When your puppy is full grown, your dog will have a comfortable crate to call their home.