Ideal Pet Products Designer Series Ruff-Weather Pet Door with Telescoping Frame, Medium 7.25" x 13" Flap Size

Crafted from sturdy structural foam plastic, this frame fits doors with a thickness of 3/4" to 1-3/4". Optional wall kit sold separately | Equipped with two flexible vinyl flaps, forming a 3-inch barrier for superior insulation and energy savings | Flap size is 7.25" x 13", frame size is 11.375" x 17.5", and pet door cutout size is 8.375" x 15" | Comes with a lock-out slide to keep your pet in or out | Installs easily and securely. Package includes all necessary components: mounting hardware, a template, and straightforward instructions