The Erickson Manufacturing heavy duty brown canvas tarp has been wax processed, making it water resistant and prevents mildew growth. It's designed to be used to cover trailers, firewood, used as a shade cover at a campsite, and much more. It features rust resistant grommets that are spaced approximately 3' apart. | Erickson Manufacturing Ltd. Heavy-Duty Canvas Tarp in Brown | Size 12' x 20'