The Hakuna Pets Black Glass Patio Pet Door is designed specifically for small dogs to access sliding glass doors. This small-sized pet door features a sleek black color and is made of durable glass, providing safety and security for pets while allowing them to easily enter and exit the patio. With its brand reputation for quality products, this pet door is a stylish and functional addition to any home for pet owners looking to give their furry friends more independence and freedom.