Lumber Tarp 4' drops / 18 oz | Plastic Fabric Solutions INC.
Lumber Tarp Material – Tarping USA, Inc.
16' x 24' Flatbed Truck Tarps Heavy Duty 18oz Steel Tarp - Black - Walmart.com
Amazon.com: Mytee Products 24' x 18' Flatbed Trailer Steel Tarp with 8 FT Drop - Heavy Duty Black 18 Oz Vinyl Waterproof Tarp for Truck/Trailers to Protect Cargo from Wind, Rain, Snow