This diamond-shaped, three-legend flip placard is 13 3/4 x 13 3/4 inches, with a 0.032-inch thickness. Depicted in symbols and English text, the three legends are Class 3 UN 1202, 1203, and 1863. It has mounting holes for easy attachment. With a red background on non-reflective aluminum, it can withstand between -14 to 140 Degrees F. This placard meets TDG standards, and DOT, ICAO/IATA hazard communication standards. It has no header and cannot be written on.