Provide your pet independent passage: There are magnets on the side of the bottom of the door frame, the pet screen door can be automatically closed after the pet passes through the door. Two sliding latches on the bottom of the flap help you lock the dog screen door, ensure your pet stays inside the house when unattended. Material: Made of high quality ABS material, which is safe, non-toxic and durable. Easy to install: Available in kinds of screen door or screen windows; Install the pet screen door in a suitable place according to your dog’s size and fix it with screws. Instructions included in the product package. Using Suggestions: Please bend the inner flap slightly when inserting it into the outer frame. And teach your pet to enter/exit through the screen door.