Rigid 4mm 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.
Rigid 4mm Foamcore is typically mounted on an easel for presentations or can be used for signs, posters, etc. It is made of a relatively delicate material and is best for one time use; it can last longer with proper care. This product is not waterproof.
3mm (1/8″) PVC Material is a smooth, bright white rigid plastic that is lightweight, yet very durable and weather resistant. They are great for both indoor and outdoor use, and have a low-glare, matte appearance.