Just did this last week. Couple suggestions.... Take a look at Sailrite Plastipane 20 ga. clear vinyl. It's what we used. Extremely easy to roll up. You can buy it by the yard, 54" wide. It's inexpensive, $ 6.40 a yard. We did the whole enclosure ( materials ) for what 1 Strataglass pane would have cost.
Now, I do believe you get what you pay for.... But for a 1st time project it works. I was honestly amazed how clear it is. Easy to work with. And doesn't break the bank. We did the entire enclosure, including buying a sewing machine, for under $1100. Price having someone do it...
No idea on how long it will last. But at that price point we could replace it every couple or 3 years....
Any ?'s ask away.