3M AUTHORIZED. Official 3M reflective films and inks on durable, rustproof aluminum ensure that our signs meet all DOT requirements for outdoor parking and traffic signs. DURABLE ALUMINUM. Heavy-duty rustproof aluminum has a 10-year outdoor durability rating backed by a 3M warranty. LAMINATED. Graphics are protected from weather and abuse. Graffiti can be cleaned off. Laminated signs outlast competitive unlaminated or overcoated signs. INSTALLATION. All signs come with rounded, burr-free corners and pre-punched/pre-cleared holes. Signs mount to U-channel posts, square or round galvanized posts, wooden posts and chain link fences. GIVE A MESSAGE. Make your parking lot run smoother with this Entrance Only sign. Reflective Signs Are Hard to Ignore
Our pre-drilled aluminum signs have a reflective surface for extra visibility in dark and dim light conditions. Reflective surface means light thrown from headlights will reflect back making the sign more readable.

3M Engineer Grade ["EG"] Reflective
3M Engineer Grade reflective signs are the most common material found on our public roads. 3M Engineer Grade signs have upto 7-year outdoor warranty.

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
3M Engineer Grade signs have a 7-year outdoor warranty, but most signs last much longer. Our 80 mil thick signs are laminated for enhanced performance. You can clean off graffiti and your graphics are protected. Unlike many other, our Entrance Sign with Left Arrow uses industry-leading 3M inks and not off-brand or other low-durability inkjet pigments that fade in a year or two.