"Weather Guard is our heaviest-weight industrial-grade PVC tarp Features a rugged 11.2 oz. per sq. yard tarp fabric that is highly resistant to cold weather, fraying and tearing, thanks to a tough mesh weave of 420 denier polyester cords. Poly weave has a waterproof coating of polyvinyl chloride PVC that withstands all weather and resists the sun's UV rays. Tarp provides excellent cover for equipment, truck and wagon loads, haystacks and many other heavy-duty applications. Also great for trailering. Grommet Material Brass, Grommet Spacing ft. 2, Material Type PVC, Mildew Resistant Yes, Dimensions L x W ft. 16 x 20. 11.2 oz. per sq. yard PVC fabric Mesh weave of 420 denier polyester cords PVC waterproof coating withstands weather and UV rays Heat-welded reinforced corners Rope-reinforced edges for extra strength Waterproof and UV resistant Heavy-duty rust-resistant brass grommets every 2 feet along all 4 edges Corners are reinforced with nylon webbing to add to grommet strength 12 mil total thickness"