Brand New Package of 100 Blank Signs (White) 18" x 24" x4 mm Coroplast corrugated plastic sign. BLANK SIGN - Great for any event. Add your own message in permannent marker or paint. OUTDOOR SIGN - Corrugated Plastic 4MM. Corrugated plastic is great for signs and craft projects.This material is sturdy, weatherproof and reusable. From high-quality materials for elegance and extra durability for reusable. This item is in the category "Business & Industrial\Retail & Services\Business Signs". The seller is "signdepotorlando" and is located in this country: US. This item can be shipped to United States.