The Sliding Tracks work with the Security Plate included with your PlexiDor Pet Door. The PlexiDor Sliding Track makes it simple to add extra security to your home, whether you leave it for an extended period of time or just want everyday security for you and your pets. EASY TO INSTALL Simply attach the left and right tracks to the interior frame and slide the security plate into place. Secure the plate with the handy flip lock feature and you’ve finished. The tracks are made of strong and durable aluminum, and they’re available in silver, white, or bronze in sizes medium, large or extra large. The plate is a great tool for securing the home, and for signaling to pets that the door is locked. Using the sliding tracks, it takes seconds to mount the plate. Extra Large Size Guide For Door Series 26 15/16″ x 1 1/4″ Dimensions 15 1/2″ x 1 1/4″ Silver,White,Bronze Colors Silver,White,Bronze For Door Series 26 15/16″ x 1 1/4″ Dimensions 19 3/8″ x 1 1/4″ Silver,White,Bronze Colors Silver,White,Bronze For Door Series 26 15/16″ x 1 1/4″ Dimensions 25 1/2″ x 1 1/4″ Silver,White,Bronze Colors Silver,White,Bronze Previous page Medium Learn More Large Learn More Large Plus Learn More Next page