Speed Checked By Radar Sign Material:Diamond Grade 10+ 5 mph is too slow

5 mph is too slow

If you are shutting down the right shoulder

plastic which cracks or warps

A lane is a lane and the shoulder is the shoulder

PVC flexible

Speed Checked By Radar Sign Material:Diamond Grade 10+ 5 mph is too slowSizes Available: 18x24, 24x30 We make all our signs from . 080 thick aluminum. Other companies use steel which rusts, plastic which cracks or warps, or a thinner gauge aluminum (. 060 or . 040) which bends or buckles. Material Details We use 3M reflective sheeting and 3M UV resistant inks. 3M offers the following on their sheeting: 3M 3400 Series Engineer Grade Prismatic (EGP): Rated for 5 7 year outdoor lifespan 3M 3930 Series High Intensity