Hale Wall Mounted Pet DoorShow your puppy hes top dog by installing a Hale Pet Door. The Wall Model is the most popular model. Its self framing and self supporting design makes it adapt to fit any opening cut into an interior or exterior wall whether it is standard construction, stucco, block or masonry walls. The wall model gives your pet the freedom to come and go from anywhere in your house as they please. Gone are the days of having to leave your pet outside or in a kennel