1. [Quiet and Practical] The two parts feature cat paw designs. The door brush strip eliminates the sound when closing the door, and there is a rubber ring inside to protect the cats from getting injured. The silent operation prevents other pets from entering and doesn't disturb the owner, allowing the cats to freely enter and exit the litter box. 2. [Weatherproof] All cat doors are made of durable ABS plastic, which can withstand harsh weather conditions. Comfort and ease of use are also prioritized. The sturdy and stable structure made of 100% UV-resistant polycarbonate ensures that the dog door is almost indestructible. 3. [Perfect Window Decoration] The clear design gives the window screen high - quality looks. It is very suitable for window screens, sliding glass doors, and glass windows. It is an ideal choice for all glass applications. The stylish pet skirt will immediately catch your pet's attention. 4. [Suitable for All Pets] The size of the pet door is 7.25 inches, suitable for small dogs (6 kg/13 lbs). Therefore, if you want to give your lovely pet more space, feel free to order the pet door.