The Hazardous Material Regulation (HM-181, along with HM-206) is specified by the U.S. Department of Transportation (DOT) Standard 49 CFR Parts § 171-180. This regulation includes the requirements for proper identification and classification of hazardous materials during transport or shipping.
DOT 4-Digit Blank Placards serve as a vital labeling tool in identifying potentially dangerous materials in transport or storage. The blank space on DOT placards allows individuals to quickly and effortlessly add the specific 4-digit UN identification number that corresponds to a particular hazardous chemical, in accordance to DOT. Select the appropriate hazard classification and division style placard, then fill in the 4-digit identification number by hand or use our self-adhesive numbers (sold separately below). All identification numbers are required to be 3 1/2" in height.