The PetSafe® Staywell® 300, 400, 500 Series Replacement Flap can be used to replace the flap in your Staywell® Deluxe 4-Way Locking, Magnetic or Infra-red Cat Flap. This is a rigid, frosted plastic flap. Compatible with the Staywell® Deluxe Manual 4-Way Locking Cat Flap (300 Series), the Staywell® Deluxe Magnetic Cat Flap (400 Series), and the Staywell® Deluxe Infra-red Cat Flap (500 Series). Trust PetSafe® to keep your pet healthy, safe and happy.