Our aluminum Safety signs are constructed from a heavy duty .08" (80mil) gauge rust proof aluminum. Don't settle for the lesser gauge (.04" or .063") signs that are being sold all over New Jersey (NJ) and New York (NY)! Those thinner gauge signs are not the official municipal sign grade you are looking for - they will not hold up nearly as well, and they can easily be vandalized or bent. Our aluminum safety signs have a surface overlaid with 3M™ Prismatic reflective sheeting for both nighttime and daytime visibibility. All of our aluminum outdoor signs feature radius corners and 3/8" holes which are centered one on the bottom, and one on the top for easy mounting. This type of sign meets or exceeds all Federal MUTCD and State DOT standards. All sign orders, regardless of size, will ship for one low flat fee rate of $7.95.