four season porch sliding door for toy hauler

I'll be interested to see the finished product. We have the 3 season sliding doors on our rig and made them more insulating by adding black fabric panels velcroed to each door to provide more privacy and a little more insulation than the plastic film panels alone. We are full-timers, but rarely leave the patio deployed at every stop. I had thought of having some plexiglass panel inserts cut to give a little more R value, but we are rarely in real cold or real hot weather, so it hasn't been a big issue. Good luck and keep us in the loop on your progress!