Industry Leading Durability<br>Our TwinCal Window decals are great for store entrances, windows or for two-sided advertising. Designs appear on both sides of the label. Both sides are "right reading". It is possible then, to have two distinctive designs (one on each side). Polyester film is durable, and not subject to stretching or shrinking. Great solvent and water resistance. Unlike many other labels, our Enter - Do not Exit 2-sided labels comes with permanent adhesive on one side of the label (and your graphics are read through this crystal clear adhesive and the window).<br><br>USA’s Oldest Label & Sign Manufacturer<br>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 labels & signs in the USA. We have been an integral part of safety and convenience our labels & signs have provided over the years.