The PlexiDor sliding track accessory is easy to install. To install the sliding tracks to the dog door you only need a Phillips-head screwdriver. There are screws provided with the tracks, and you just screw the tracks to the holes where you would normally attach the security plate.
Once you’ve screwed the tracks to the frame, remove the machine screws and nylon washers from the security plate, so it can slide down the tracks. Secure the cover with the flip lock.
How To Install the Sliding Tracks