b' Features: Convenient Pet Screen Door: Dog for cat screen door is specially used for screen for windows or doors. It allows your pets to freely enter and exit indoors or outdoors. Easy to install: Tighten the screw with the nut to the dog for cat door frame, which is firm and not easy to fall. The door flap can be replaced at any for time. Follow the prompts to install. Lockable: The 2 sliding locks at the bottom of the pet screen door can help you lock the screen door, ensuring that your pet stays at home safely when unattended. Size: Outer 11.59.45(2924cm), Inner 810.5(20.526cm). Pets screen door is suitable for cats and small dogs up to 30lbs. Please measure the size of your pet and compare to the door size before purchasing. Specifications: Material: ABS Color: Black Size (Approx.): Outer-29x24x1.25cm/11.5x9.45x0.5in, Inner-20.5x26cm/8x10.5in Weight (Approx.): 350g Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Dog Screen Door'