Eddie I would be curious as to what your results were. Its a bit too late for me now but I had removed the back
Casita window with the AC unit in it. I was able to take out the AC and the aluminum insert. The two side panes in the back window are Plexiglass. I took it to a guy here in Tx and he is charging me $150 to replace the large middle section. The reason I bit the bullet is because he is putting in the replacement strips and all the do-dads that hold the window in. Also this window is the correct and exact fit for that hole. I had contacted
Casita but they didnt have any as he told me they were Hehr
windows and were subcontracted out for the AC at that time. Anyhow I know its probably too much $$$ and in the future I will probably replace any glass myself but this way I can see how its done. That back window even with the center section still has a radius curve to it.
Might have to sell one of my Villas in Monaco to pay for this.