New, Unused Size: 20.5 X 26 cm Brand: Namsan Material: Plastic Weight Limit: 30 pounds Frame Material: ABS Plastic Dog Breed Size: Small The Namsan dog screen door is made of ABS material, making it durable and long-lasting. It won't fall off even after being opened and closed for a long time. The door frame is fixed with screws to prevent it from falling, making the door frame more stable and able to withstand pet wear and tear. Magnets are built into the frame of the dog screen door, allowing it to slide closed when the cat leaves. You can also lock the door with the blue latches on both sides if you want to prevent your pet from walking freely. Magnets are built into the frame of the cat door, and the door closes automatically when the cat leaves. You can also lock the door with the blue latches on both sides if you want to prevent your pet from walking freely. Cat door frame: 24 x 29 cm, entrance: 20.5 x 26 cm; suitable for cats, puppies, and other small pets to enter and exit freely. Install the pet door according to your pet's height.