Any company that makes rubber belting for industry can provide it. Shouldn't be hard to find, we have two here in our town.
You might want to check out the price though. I was going that route until I found out I could buy the UltraGuard solid rubber guard from Camping World for less that I could make one!
Good luck, happy trails, and God bless!
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD