Designed for screen doors to let your cat or dog in and out, it can be set to automatic, open or closed, allowing you to give them maximum freedom. Made of high quality ABS, screw reinforcement makes our pet door strong enough, smooth surface, dirt-resistant, wear-resistant, corrosion-resistant, deformation-resistant, anti-aging, can prevent scratches and has a long durationlife. With an integrated magnetic flap that closes automatically. The door closes automatically when your pet leaves. You can even lock the door to prevent your pet from going out at night or when you're not home. The nylon mesh material keeps insects, flies and the like out, filters dust and dirt from the room, provides better ventilation for your home, and reduces pet odors. The frame has smooth edges to avoidto scratch your pet.