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