School Speed Limit 15 When Flashing Sign Material:Diamond Grade 10+ But we sell a lot

But we sell a lot more of them to towns and municipalities throughout the USA

3M 3400 Series Engineer Grade Prismatic (EGP): Rated for 5-7 year outdoor lifespan

And speaking of the USA

Other speed limit choices: 05  10  20  25  30  35  40  45  50  55  60  65  70  75

10  15   25   30   35   40   45

School Speed Limit 15 When Flashing Sign Material:Diamond Grade 10+ But we sell a lotSize: 24x48 Other speed limit choices: 20 25 30 35 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