Hillman Black & Red Beware of Dog Sign, 15 x 19 in. is a highly visible and durable sign designed to provide clear warning with its bold black background and fluorescent red lettering. Made from weatherproof plastic and printed with ultra-violet fluorescent ink, this sign ensures maximum visibility in various lighting conditions. I for commercial, residential, and seasonal use, it comes in a popular size of 15 by 19 inches, ing a reliable and long-lasting solution for alerting visitors or passersby. Model Number: