The box in my kennel is 24" high x 24" deep x 38" wide, it has a door which is meshed and air gaps on each end. Its now used by my Patterdale and Cocker, but was also used by my Nova Scotia Duck Tolling Retriever along with the other two, when the Toller was alive. They were quite happy in it. At the moment I have no bedding in there, but usually use a padded, waterproof bed in the winter.