Self-closing pet flap door for indoor or outdoor walls with a high quality lock sheet. The door automatically closes after your pet passes through, helping to keep rooms secure and energy efficient. Sizes available - S: 29 cm x 24 cm - L: 42 cm x 37 cm Suitable for dogs, cats and other small pets. Durable and stable - Made from high quality ABS material that is firm, durable and resistant to deformation. - High temperature resistance and screw reinforcement for extra stability. - Lightweight yet sturdy, designed to last. Self-Closing and lockable - Built-in magnetic closure ensures the door closes automatically after use. - Can be locked to restrict access as needed, while still allowing easy entry for your pet when unlocked. Easy installation - Full instructions included; quick and simple to install. - Compatible with all doors, windows, panels, or any screen area, so it can be fitted into interior or exterior walls. Practical use scenarios - Household with indoor/outdoor access: install in a wall between living areas and a patio to give your cat or small dog freedom to go outside and return without your help. - Office or apartment: add a pet door to a screen door or window panel to allow pets to move freely while you maintain control when needed. - Multi-room homes: create convenient access between rooms (kitchen, laundry, garage) to reduce pet congestion at doors and improve daily routine.