Use durable Corrugated Plastic Signs & Frames to promote an event, company, service, or message. We print these lightweight and cost-effective plastic signs on approximately 3/16” thick corrugated plastic sheeting (also known by the brand names Coroplast and Plasticor). This versatile extruded twin-wall material is perfect for long-term outdoor signs. When designing a sign, keep letter size and visibility in mind. Viewers may only have seconds to read the sign. Make sure the key information stands out and is easy to read. Simple, bold fonts with high contrast colors grab attention.