Rigid Coroplast is typically used for yard, parking, real estate, and election signs. They are waterproof. If utilizing H-Stakes, place your Rigid Coroplast order with the flutes vertical. Coroplast signs can be cut to any shape. Be sure to view our gallery of shapes here. Contact us if you’d like to place a special order in any of the available shapes, or a completely custom shape that best fits your business.