Abstract: Presented is a pet door for screen applications with framing members similar to that used in existing screen doors and screen windows. The pet door comprises interchangeable and reversible parts capable of being combined in a manner to acheive a configuration adaptable to the various types of screen frames that the device is installed on. To provide a rigid attachment of the pet door to the existing screen frame, mounting brackets are used. When installed, the pet door provides a rigid and safe access for pets to enter or exit a residence.