Excellent for any facility, especially high traffic areas. This sign can be used on all surfaces, rough or smooth. It works well both indoors and outdoors. A frame, lightweight design for quick set up. Bilingual for effective communication. Special handle design allows user to simply pinch handle to open up the sign completely with one hand. Heavy-duty polypropylene construction 50 percent heavier onaverage than comparable signs. Bright yellow color to stand out. OSHA/ANSI compliant text and graphic safety warning onboth sides. Folds flat for easy storage or transport on carts. Slightly taller and wider than most comparable signs. More visible to pedestrians