"Perfect Pet Modular Patio Panel Pet Door in WhiteAllow 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 consists of two modular pieces that easily assemble into a patio pet door without damaging your current patio door. The Patio Panel Pet Door can be easily inserted onto the tracts of your sliding aluminum patio door. The door is constructed of sturdy aluminum with clear tempered safety glass. The door includes a security lock for the patio door and 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 buy for installation. Fits most aluminum sliding patio doors ranging from 77 5/8"" to 80 3/8"" in height.."