Give your pet the freedom to come and go as they please with this extra-large pet door. Featuring a generous 10.25 x 15-inch flap opening, it comfortably accommodates large cats and small to medium dogs. The telescoping frame adjusts to fit a wide range of door thicknesses, making installation straightforward without professional help. The durable flap provides insulation to keep drafts out and help maintain your home's temperature. Give your pet independence while keeping your home comfortable.