Kotap 30-ft x 40-ft General Purpose Blue Poly Tarp, Item: TRA-3040 FINISHED SIZE: 28-Feet 10-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