Freedom and convenience: The cat flap door allows your cats or small dogs to come and go easily and quietly. Your beloved pets won't feel trapped and you won't have to worry about opening or closing the door for them anymore. Its versatility offers convenience and flexibility for your pet's daily movements and gives them the freedom to come and go as they please, promoting their sense of independence. Safer with 4 locking modes: By sliding the switch, you can control your pet's access and keep stray animals out. Choose from free in and out, completely locked, outside only or inside only. Durable and convenient: Made of sturdy ABS plastic, the cat door is ready to serve your pets for a long time. With a sealing strip and magnet for alignment, it keeps insects and the smell of cat litter out, reducing the loss of cool air in summer and heat loss in winter. Practical transparent flap: Our pet door is equipped with a transparent flap for your pet's safety, so they can see inside and outside at all times. The brush strip helps reduce noise when your pet enters or exits. Large size and versatile: 25*5.5*27.7 cm (L x W x H) outer size, 22*20 cm (W x H) flap, this pet door is for cats and small dogs with a waist circumference of less than 58 cm. Perfect for interior and exterior doors made of wood, PVC, metal, panels, glass, etc. Can also be installed in windows, walls, litter boxes, etc. Easy to install: The cat door for exterior doors comes with detailed instructions, 8 screws and their caps. You can install it easily. Freedom and convenience: The cat flap allows pets to enter and exit quietly, promoting their independence and saving you effort. Safer with 4 locking modes: Choose between free access, completely locked, only in or only out to control access for pets. Durable and convenient: ABS plastic with magnets and sealing strips protects against insects, odours, heat loss in summer and heat reduction in winter. Practical transparent flap: transparency ensures safety, brush strips reduce noise when pets enter and exit. Large size and versatility: 25x5.5x27.7 cm, suitable for doors, windows, walls, also for cats and small dogs with a waist circumference of up to 58 cm.