How-to-install-patio-panel-pet-door, the deluxe patio panel pet door locks into an existing sliding glass door frame with no cutting required. each panel comes with a reversible lock for the option of either left or right opening doors.. This is a great alternative to a panel pet door as it doesn't take up space in the sliding glass door, and is surprisingly easy to install. pet door store 22212 echo lake rd snohomish, wa 98296, we would like to show you a description here but the site won’t allow us.. Sliding glass dog door (also known: patio pet doors, panel pet doors, patio panels or dog doors for sliding glass doors) is the most comfortable doggie door that is easy to be installed, total solution for peoples who need a pet access point without the hassle of installing a door through a wall or a door. for your dog, it becomes the perfect selection as it provides the comfort for your pet.