for thos askgin if this will fit on a 48' trailer, the mounting brackets on my trailer for the srafters are actually 49' 6" from end to end, So it's not a 50' it's a 49.5' awning and as such a bit too big for a 48', without being modified.
I believe any awning/sail shop could easily remove a section of the top canvas and it could be made to fit on a 48'
Awww, come on guys, it's so simple. Maybe you need a refresher course. Hey! It's all ball bearings nowadays.