The PETSAFE door installation adapter model PPA19-16145 is an accessory specifically designed to facilitate the integration of the microchip cat door into spaces with walls, windows, or glass doors. Made of durable metal with a white finish, this adapter ensures a solid and lasting installation, allowing the door to fit glass openings with diameters ranging from 212 mm to 285 mm. Thanks to its metal construction, it guarantees stability and secure fastening, essential to prevent leaks or movements that could affect the proper functioning of the access system. It is specially designed for cats and is compatible with the PetSafe Cat Flap microchip model PPA19-16145, enabling precise connection and optimal sealing between the door and the glass. This adapter is a practical and technical solution for owners who want to provide their pets with microchip access control in glass enclosures without major or complicated modifications. Its discreet design and white tone make it suitable for blending with various decor styles and maintaining a neutral aesthetic in the environment. Overall, this accessory represents a reliable technical option that expands the installation possibilities of the PetSafe system, ensuring functionality and compatibility in glazed spaces.