Great well made product. One comment I've worked with my hands for many years in construction on many items requiring screws or bolt to be joined just by feel as you would be working blindly at the time and you develop a good feel for the threads. So I'm not a newbie when it comes to installing things. I found it much much easier to put the long mounting screws into the outside panel then push the outer panel thru the cut out and the install the inner panel. It's much easier this way as you're putting the rod thru slip holes and you can reach around the sides to help insert the rods into the holes. Instead of trying to screw into the treaded holes with jut a small portion of the rod to work with and I was installing the door on a stucco covered house framed out in 2"X6" framing a home with 2" X 4" framing would be even easier as you have even more rod left to work with. There is also very little chance of cross treading the rods this way. Just my thoughts after over 50 years of experience working with my hands.
Thank you for a great American made product. keep up the good work.