Kotap 40-ft x 40-ft General Purpose Blue Poly Tarp, Item: TRA-4040 FINISHED SIZE: 38-Feet 6-Inch by 39-Feet 4-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