After doing some homework on this I've found that the straps are included with the Owner's Manual for the awnings as some of you are indicating. If you didn't get one, check with your dealer. It's not uncommon for the warranty paperwork and owner's manuals to be pulled from the unit by the dealer and returned during delivery. It wouldn't be a huge surprise if these straps became misplaced at times.
If you can't track one down, contact our Customer Service department at:
Prime Time Manufacturing, Manufacturers of travel trailers and fifth wheels
We have them in stock.