Dont cut corners when shipping hazardous liquid substances. Use Labelmasters UN 3432 Miscellaneous Dangerous Goods Placards. Pre-printed with the four-digit UN Number, these DOT placards are what you need for shipping environmental. Hazardous Substances, Liquid, N.O.S. and meeting the requirements of 49 CFR 172.500 for domestic and international shipments of hazardous materials by highway, rail and water. They are printed on printed on non-adhesive, 20-mil rigid vinyl that is perfect for repeated usage in Slidemaster holders and when the placard will be used for multiple trips and in harsh weather conditions. White and black, these Hazard Class 9 placards measure 273 x 273mm and are sold in packs of 25 or cases of 500.