Trump Nope Yard Sign 18" x 12" - Visible Text Trump Halloween Sign, Biden for President 2020 Yard Sign, Trumpkin Sign with Metal H-Stake. Economical and durable, our Coroplast Yard Signs are a staple of outdoor advertising. These outdoor 18" x 12" Trump Nope Yard Sign full color direct printed graphics are vertically fluted for use with an H-Stake. Coroplast is typically used for yard, parking, real estate, and election signs. They are waterproof.