Perfect Pet Modular Patio Panel Pet Door in Mill - Aluminum Patio Dog Door and Other Panel Dog DoorsAllow your pet access to the backyard or patio without having to cut a hole in the door or wall. The Perfect Pet Modular Patio Panel Pet Door in Mill consists of two modular pieces that easily assemble into a perfectly functional patio pet door without damaging your current patio door. This handsome patio dog door can be easily inserted onto the tracks of your existing sliding aluminum patio door. Constructed of sturdy aluminum with clear tempered safety glass, this special aluminum pet patio door makes for a great way to provide your favorite four-legged friends with the freedom to enter and exit your home. Whether you have a small breed dog or a large breed dog, you're bound to find the right patio panel dog door to accommodate your pooch, as these panel dog doors are available in various sizes. For added security, a security lock for the patio door is included as well as an animal lock-out slide that allows you to lock the pet door portion at your own discretion. All the parts are included so there are no extra parts to purchase for installation. Fits most aluminum sliding patio doors ranging from 77 5/8" to 80 3/8" in height.