NAMSAN Cat Flap for Mosquito Net Easy to Install Cat Freedom Lockable Mosquito Net Door for Small/Medium Cats/Dogs

Size: Outside Pet Screen Door Frame: 24cm x 29cm; Inner Frame: 20.5cm x 26cm; Suitable for small/medium dogs or cats. Material: Made of ABS material, safe, non-toxic and durable. There is a magnet at the bottom of the door frame, the pet screen door can be automatically closed once the pet enters the door. Two sliding locks on the bottom of the flap help you lock the dog screen door, make sure your pet stays inside the house when not supervised. Install the pet screen door in a suitable place according to your dog's size and fix it with screws. Instructions included in product packaging.