When it's time to change the flap on your pet door, the PetSafe® Staywell® 600 Series Replacement Flap is here to help. The soft, transparent single flap offers a weather tight seal to keep the weather outside where it belongs. This replacement door flap is compatible with the PetSafe® Staywell® Aluminium Pet Door (600 Series). Trust PetSafe® to keep your pet healthy, safe and happy.