We have had a large sliding glass door forever. It's been a pain forever, too. We have replaced the old one with a new one and it sure looked nicer. But the screen door never worked right and the tracks keep getting super dirty and nasty. We also went through several different sets of vertical blinds. They always wound up broken. So, we decided to put in a french door. Here are some pictures to show you the progress.
This is pretty self explanatory! This is our old door.
Now, here is our new door ready and waiting. Isn't it pretty? I love it!