Coroplast is a temporary corogated plastic product that comes in two sizes (4 mil & 10 mil) and various different colors.
4 mil coroplast is a temporary product and has a life of approximately 1 year depending on sun exposure. This product is typically used for advertising temporary events and election campaigns.
10 mil coroplast is just like 4 mil only thicker. It also has a longer product life. This product is typically used for longer term advertising such as Real Estate advertisement.