Aquatic Technology 7980WS1812E 18"x12" Blue Notice Persons With Diarrhea Pool Sign measures 18 x 12 inches, is printed on .040 mil Styrene Plastic, and is designed for preventing patrons with diarrhea from entering the pool. Lettering height meets California state code. Letter height is 1 inch. Our Notice signs indicate a statement of company policy as it relates to safety of personnel or property. This sign is lightweight, durable, and waterproof for indoor or outdoor use.