Removable Vinyl, Pressure-sensitive hazardous warning placards meet all the U.S. Department of Transportation (DOT) regulations for both domestic and international transport of hazardous materials. These Dangerous Goods placards are required by 49 CFR 172.500 and the International Maritime Organization (IMO) IMDG Code Publication. DOT Placards are mainly used for highway, rail and ocean containers, which is why they are designed for water resistance in a removable vinyl material. Our DOT placards are extremely durable, designed to protect from UV sun rays and water, preventing from peeling, fading, or chipping. Most placards measure 10 3/4" x 10 3/4" (273 mm). We will gladly match any online advertised price. Please inquire or call us at (866) 272-9880 if you require any further information. Our friendly customer representatives will be glad to help.