DOT Placards are used to classify and be affixed on transport vehicles to identify the proper hazard. The DOT Placard identifies the material within the proper classification. There are 9 main hazard classifications, in which many have divisions. These have mandated color schemes, symbols, words and numbers to identify the hazardous material. They are printed in a diamond (Square on point) design (unless noted).
Orange 4-Digit Panels- DOT Specifies the 4-digit UN Identification number to be placed on an orange panel. These panels meet the criteria to be at least 6.3" H (160 mm) x 15.7" W (400 mm) with 3.9" H (100 mm) 4 digit black numbers inside a .6" W (15 mm) black border. Stock signs are in specific UN Chemical Identification Number. Available 10 per package.