PetSafe SmartDoor Connected Pet Door for Cats and Dogs Tunnel Extension for Thick Doors and Walls, Medium, ZAC19-17244

About this item PERFECT FIT: Provides the perfect fit when installing SmartDoor Connected Pet Door in walls or thick doors EXTRA SPACE: Adds 2 inches in depth to pet door tunnel length EASY DIY INSTALL: Installation is as easy as gluing or taping each extension in place MEDIUM COMPATIBILITY: Medium extensions compatible with Medium SmartDoor (ZPA19-17252, PPA00-17254 and PPA19-17256) U.S.-BASED CUSTOMER CARE: Our pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions QUALITY PROMISE: PetSafe brand has been a trusted global leader in pet behavior, containment and lifestyle innovations since 1998 to help keep your pet healthy, safe and happy › See more product details