Well after searching multiple RV stores and online had no luck finding a replacement door slide. Also tried hanging a screen and then a piece of plexiglas which sorta worked.
Thought I would try my dealer a 3rd time and got a different part guy. Presto! He say “sure we can get that”. Two weeks later it shows up on my porch! A little nerve wracking to install. Had to flex it to fit in but made it.
$13 for part, $12 shipping.
Amazing how much the old one aged in just 4 yrs. May coat with 303 protectant.