Something about this wrap windows makes them shatter when being towed.
The PO of my trailer said all the glass was fine when he purchased my trailer but when he started towing it home, both windows shattered out.
I don't know what it is but I don't think it was a rock. They must be getting briddle over time.
I replaced both of mine myself with lexan I purchased from Home Depot. They turned out alright. If I could do it again, I would be able to do a little better.
You can see a little bit about it on my website by clicking here.