If you bought your PC brand new, it comes with a large vinyl bag full of goodies. If the strap is missing, call Phoenix. I am sure they will send you one. If you bought your PC used and it is missing, call Phoenix. You just might have to pay for it, but at least you have it. If Phoenix can't help, then of coarse call the manufacture of the awning and purchase one through them. But it seems better to start with a first call to Phoenix on something like that.