3'x4' Design Your Own Union Label Corrugated Plastic Yard Sign - Design #P169. Add your own photo! The design will be printed in full color on either one or both sides, depending on your choosing. Great for political campaign yard signs. Vertically fluted corrugated plastic material is sturdy, weatherproof and recyclable. This is the standard size sign used by most candidates across the United States. Stakes not included. Visit your local hardware store to consider fence t-stakes and u-stakes.