This Petsafe Staywell replacement cat flap is a must-have for cat owners who want a convenient way for their feline friends to go in and out of the house. Made of durable plastic and designed to fit the 300, 400, and 500 series, this replacement flap ensures that your cat can come and go as it pleases. With its infrared, electromagnetic, manual, and microchip lock, compatible mechanisms, This cat flap is manufactured in China and comes in a unit quantity of one. It is perfect for those who want a hassle-free way of letting their cats roam freely.