Safe Entry and Exit: The pet door has four different entry and exit methods, which can help your pet enter and exit more safely and prevent other pets from accidentally entering the door. house. Double Baffle: The baffle design provides weather protection and a sliding cover in the closed panel adds extra insulation when your pet is not in use. EASY INSTALLATION: The exterior dimensions of the door frame are 25 x 23.5 x 5.5 cm, you can find suitable drill holes for interior or exterior walls. Quality Commitment: All products are brand new. If you have any questions, please don’t hesitate to contact us and our customer service team will be here to help.