Emergency Exit - Do Not Block Sign by SmartSign 10 x 14 3M Reflective Aluminum

3M Engineer Grade [“EG”] Reflective3M Engineer Grade Reflective Signs are the standard-grade signs, most popular for traffic signs in the US. These signs carry 3M warranty for 7 years and reflect light to make the message visible and legible in dark.USA’s Oldest Sign ManufacturerFamily 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 Durability3M Engineer Grade 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 Emergency Exit - Do Not Block signs use industry-leading 3M inks and not off-brand or other low-durability ink jet pigments that fade in a year or two.