Size: Pet Screen Door Outer Frame: 24cm x 29cm; Inner Frame: 20.5cm x 26cm; Suitable for small/medium sized dogs or cats. Material: Made of; Made of high quality ABS material, safe, non-toxic and durable. Your pet an independent passage: There is a at the bottom of the door frame Magnet, the pet screen door can be closed automatically after the pet goes through the door. Two slide latches on the bottom of the flap help you lock the dog gate door, make sure your pet stay inside. unattended indoors. Easy to clean install: Available in types of screen door or screen window; Install the pet screen door in a suitable place. according to your dog’s size and fix it with screws. Instructions are included in the product packaging. How to use: Please bend the inner tab slightly when inserting it into the outer frame. And learn how your pet is doing at; enter/exit through the screen door.