Kotap 18-ft x 20-ft General Purpose Blue Poly Tarp, Item: TRA-1820 FINISHED SIZE: 17-Feet 2-Inch by 19-Feet 6-Inch Rust-Proof Aluminum Grommets every 3 -Feet and on each corner Woven and coated polyethylene All edges heat-sealed and reinforced with polyethylene rope Rot and Shrink Proof