1020PVC18 Heavy Duty Tarps 10′ x 20′, 18 Ounce Vinyl Coated Polyester w/ Grommet at 3′ Centers Heavy Duty Tarps – constructed of 18 ounce vinyl coated polyester material. Reinforced seemed edges with heavy duty grommets every 3 feet. Standard color is orange but other colors are available on special order. Standard sizes listed below but we can build any shape or configuration you need. Please contact our customer service department with your special needs.