18″ x 24″ (2) sided union made signs (corrugated plastic signs) are the durable choice if you’re looking for longer usage or if you just prefer the look of a more rigid media. These are not cheap lawn signs! Our high quality 4 mil signs are perfect for bandit signs, campaign signs, and political signs.You can generally expect a 2-3 year life out of these coroplast union made signs, which is good for you and not so much for us, but that’s O.K., we’ll still be here! All Political Corrugated Plastic Signs printed with union bug and recycle logo. If you are looking for cheap yard signs that are high quality try our poly sleeve bag signs. We require a ¾” white border on all signs.