Yard signs are made of Coroplast (4mm), which is a type of corrugated plastic that is a light-weight, tough material making it ideal for both indoor and outdoor use. Common uses of yard signs include political signs, directional signs, and event signs. Unless otherwise requested, prints are oriented with vertical flutes, which allows stakes to be easily inserted. Stakes sold separately. Minimum order $45. (Flutes are the open channels inside the corrugation.) (Print-ready art is needed). 18" H x 24" W