Catlady4847 welcome to irv2
Have you tried Newmar Repair Center give them a call have your coach MFG # maybe they can help. They may say go to a dealer to order but its worth a try.
If you would go to your signature profile block and you can add your coach and chassis info so it will follow you on any of your new posts.
I would like to invite you to the Newmar
Owners Forum and it will show your not just a new member.