Works well and holds the door in place. Purchased two years ago and no issues.

This works great. I had to use a few "spacers" to bring it out from the wall. The reason for this is the trim around a window that is directly above the plexidor. The metal insert had to slip past this trim. The spacers worked great and it is so much better than using the key. It makes me feel safer when the grandkids are over - I lock it with the key and use the metal insert.

This medal sliding track with lock works well with out giant Plexidor. We have the largest Plexidor offered (for a Great Dane) which is big enough for a human to enter through. We use the sliding door as protection when we are traveling, or if there is a chance of severe weather. Please note: when the sliding track is in place and pets are on the outside, the pets cannot see the door is covered on the inside. Our Great Dane almost always ran through the door from outside to inside at a very high speed. To prevent injury, I would tape a cardboard cover to the outside of the pet door to stop her. By doing this we never had any type of issue with trying to enter with the panel on.

Heavy duty.