RIck,
In a pinch, H.D. or Lowes has 1X30" belts made by Norton in a 3 pack. Each belt is a different grit. Not bad if you're in a spot for a belt or two.
A few years ago I ordered several doz. from someone I found on line & am still using them.
IMO, Jantz & Trugrit are the go to places for quality grinding belts though.
Larry