Heavy Duty Smart Locking Pet Screen DoorHeavy Duty Smart Locking Pet Screen Door Looking for a dog door to give your pet easy exit and entry through your screen door? Our cat door was made to give your pet freedom and keep them safe at the same time without much effort. Equipped with a 4 way locking system, the pet door gives you multiple locking options to meet your needs. You can keep the locks open on both sides of the cat door for window if your pet is well trained and only goes out for