PetSafe® 2-Piece Sliding Glass Door Convenience for You and Your Pet The PetSafe® 2-Piece Sliding Glass Door gives your pet access to the outdoors using your existing sliding glass door. No cutting required! Easily assemble the two pieces for convenient pet access. It will automatically adjust to fit your existing sliding glass door. This door also offers a temporary installation option, making it great for apartments and rental properties. The Sliding Glass Pet Door offers a durable aluminum frame with tempered glass, pile weather stripping, glass sweep and magnetic closure for weather resistance. A slide-in closing panel is also included to restrict your pet's access, keep strays out or for additional weather resistance and energy efficiency.