Chief of What

High I am a new member> I just recently purchased a 2019 Heartland Wilderness 2500rl. While it was parked a person was trimming grass and a rock busted one of my windows out. I have been trying to replace it. I ordered one from Recpro after getting the model number of the window from a RV dealer. I need and 18x30 vertical window 1 3/4 inch thick. Any Ideas Thanks