There is not a specific awning for RV's. There are two major manufactures that make them, Dometic and Colorado. There are probably more, but I don't know their names.
What you will have to do is measure the size you need, and order one. You should be able to find the size you need by measuring the holes from the one that was removed. Also you will have to check if it was a manual or powered awning. You will find multiple sites on line or you could get it through a RV dealer. Sorry that I wasn't much help for you...
2014 Denali 289RK
2017 Nissan Titan XD Pro-4X CC.