Hale Dog Doors were invented in 1985 when Bill Hale needed a dog door for sliding glass doors, but none existed. So he decided to build one that would meet his own high expectations. It was an exciting breakthrough in the dog door industry and quickly became known as one of the most secure dog doors ever.
Today dog doors by Hale are available in many other styles and models including Hale Dog Doors for walls, windows, doors and screens. They come in 11 different sizes in each style so there's definitely a model in the Hale Dog Doors lineup to suit any need.