YOUTHINK small pet door for glass windows and doors - Clear and discreet design The flap is transparent, so when installed on a clear glass window or door it blends with the surface and pets pass through as if the opening is seamless. - Cat and small dog compatibility Flap size is 7.25 x 8 inches. This small pet door suits all breeds of cats and some small dogs up to 6 kg (13 lbs). - Quiet and smooth operation A brush strip reduces noise when pets come in or go out, providing a silent action that won’t startle pets or disturb you. - Durable materials for long-lasting use The pet flap is made from high-quality ABS, weather-resistant and sturdy for long-lasting performance. Robust, stable polycarbonate construction adds strength and makes the door nearly unbreakable. - Easy installation on glass Specifically designed for installation on glass windows and sliding glass doors, allowing convenient access without compromising visibility. Use scenarios - Install on a glass patio door or balcony window to give a cat or small dog safe outdoor access while you maintain control of entry and exit. - Use on an interior glass door to allow pets to move freely between rooms without leaving doors open. - Place on a large glass panel in apartments or homes with extensive glass surfaces to provide a practical pet door without blocking views.