The Baboni 3-Flaps Pet Door is designed for medium-sized dogs up to 40 pounds, featuring a locking flap door with a steel frame. It has a 2-inch thick mattress and is compatible with doors with a minimum thickness of 1.38 inches. The pet door is made of aluminum and has dimensions of 2 x 14.25 x 21.06 inches. Additionally, it is equipped with smart home compatibility with Amazon Alexa, making it a convenient and secure option for pet owners looking to provide their furry friends with easy access to both interior and exterior spaces.