Size: Pet screen door outer frame: 24cm x 29cm; inner frame: 20.5cm x 26cm; Suitable for small/medium dogs or cats. Material: Made of high quality ABS material, safe, non-toxic and durable. Give your pet an independent passage: There is a magnet at the bottom of the door frame, the pet screen door can be automatically closed once the pet goes through the door. Two sliding locks on the bottom of the flap help you lock the dog screen door, ensure your pet stays inside the house when not supervised. Easy to install: Available in kinds of screen door or screen windows; Install the pet screen door in a suitable place according to the size of your dog and fix it with screws. Instructions included in the product packaging. Using Suggestions: Please bend the inner flap slightly when inserting it into the outer frame. And train your pet to enter/exit through the screen door. The pet screen door is suitable for screen doors or windows, specially designed for pets. It is the best choice for all pet households. Equipped with a sliding lock, lockable dog screen door The side of the door frame design with a sliding lock, the door is lockable when you are not at home, preventing pets from going out without your supervision. Easy to install, fix stably Install the door according to the instructions, the door can be firmly fixed in the screen area by screws. Automatic closing, prevent mosquitoes from entering There is a magnet at the bottom of the door that can close automatically; Individual pet passage, and you don't need to open or close the door repeatedly. High-quality ABS material The durable product has a long service life, fashion design suitable for daily life.