Reflective Signs Are Hard to Ignore
Easy to spot by day, and reflective at night, use this Stop - Authorized Personnel Only sign to let everyone know that only authorized personnel are allowed beyond this point.

3M High Intensity [“HI”] Reflective
3M High Intensity reflective signs offer exceptional reflectance - especially when approached at an angle.

USA's Oldest Sign Manufacturer
Family owned since 1918, we take immense pride in our signage. Being one of the oldest certainly means we know this business in and out. Our South Dakota factory is the oldest manufacturer of metal signs in the USA. We have been an integral part of safety and convenience our signs have provided over the years.

Industry Leading Durability
Signs Give a Warning – So You Don't Have To
Let this sign do the talking! This unambiguous message is not open to interpretation and, importantly, avoid a personal confrontation with the trespasser.