The door is a third party vendor go directly to them.but being glass will you expect forest river to cover a rock through your window?
For those that do not understand my comment forest river replaced the product that failed.the glass is not covered under a warranty other than defect a break it not a defect.Same as in a car you buy a new car and the window breaks do you go scream at ford Chevy dodge or who ever or do you just file it on ins.
Therefore same as a rock through a window just replace it and move on with life.
The next question is why did the strap break
Going to fast around a corner
Rough road
Stop to fast
Take off to fast
Big incline
Jump. A curve
Hit a hole
And so on