Industry Leading Durability
Our 40 mils thick Aluminum signs have a 7 year outdoor warranty, but most signs last much longer. Our signs are laminated for enhanced performance. You can clean off graffiti and your graphics are protected. Unlike many other signs, our Notice - Authorized Personnel Only signs use industry-leading 3M inks and not off-brand or other low-durability ink jet pigments that fade in a year or two

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.

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.