Ramadan Mubarak 2023 Yard Sign - Coroplast Fasting, Muslims, Holy Month, Celebration, Ramadan Mubarak 2023 Yard Sign with Metal H-Stake. Economical and durable, our Coroplast Yard Signs are a staple of outdoor advertising. These Ramadan Kareem 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.