A lightweight board made of colored corrugated plastic.
Specially designed in size for lawn signs. White or Yellow, the flute is on the 24 inch side for a horizontal sign
Similar to foam core, but washable and reusable. Less prone to damage. Quite inexpensive and useful for a variety of projects.
Strong, stiff, resilient and lightweight, great for mounting and signs. Comes in a variety of sizes and colors.