The Petsafe 740EF Staywell Pet Door Flap is a medium-sized locking flap door made from durable plastic, designed for dogs and cats. With the trusted PetSafe brand, this door provides a secure way for your pet to access the outdoors while keeping them safe from potential threats. The locking feature ensures that your furry friends can only enter and exit when they are supposed to. Perfect for pet owners who want to give their medium-sized pups and cats the freedom to come and go as they please.