No expert here, but had no choice to mess with 3 of my own and couple of neighbors. You have some very small letters probably around the 5 or 7 O'clock position. And very had to see. Write those numbers down and e-mail that pic with the numbers to glass places close to you, that say they do RV work. I think you're looking at $100.00 thru $150.00 depending on the market. Those numbers will give series, tinting, radius in inches etc. And you won't have to remove window frame (unless you want to). Take it to a dealer and he'll park it till a "glass guy" comes around, then glass guy will order glass, then give bill to RV dealer. Then RV dealer will mark up his bill $100.00 or so, and then give you the total bill.
My glass guy stopped by my house after doing some dealers work on his way back to his shop. I watched him every second. I still let him do some stuff. I ordered the weather stripping from him because there are many different styles and wanted to get what was right. (not going to mention about front overhead window that I put in and out 7 times)
The sticker is a "Hehr" sticker. Depending on series lots of parts available.
2003 Majestic 23P... Northwest travel machine
2013 Arctic Fox 25W... Wife "doll house" for longer snowbird trips
2001 "The Mighty Dodge"... tow vehicle for "doll house"