Great for open house signs 24" x 18" 4mm corrugated plastic Sign Full color UV print - Single or double sided Durable for outdoor Description Economical and durable, our double-sided Coroplast Yard Signs are a staple of outdoor advertising. These outdoor 24" x 18" full color direct printed graphics are vertically fluted for use with an H-Stake. For other sizes please order from our Coroplast product page. Spec Product Features: 4mm Double-Sided Coroplast Metal H-Stake for easy display in soft ground 24" x 18" UV Printed Graphics