black protective film...

where can i find the film that goes on the rockers and the lower edge of the doors? i just sanded all mine off since it was peeling off and i dont want to just paint it (dirt roads + mud tires = paint wearing off). either i use film or go some other route other than hurculiner and undercoating.
thanks for your help

It's available in spray cans at automotive paint supplies.

This film you speak of is called Mylar. Just google for it.. and see what you can find. You can probably order precut peices from your dealership for your application. It is a polyester film.. and still will wear out from dirt/rocks/mud. If you are that concerned about your paint down at the bottom of your doors and rockers.. maybe you should invest in some mud flaps as well.