SmartSign 3M Engineer Grade Reflective Sign, Legend "Slow - Children at Play" with Graphic, 24" high x 18" wide, Black on Yellow Legend "SLOW CHILDREN AT PLAY" Lyle signs supplies your sign with radius corners for safety; holes punched for post mounting Lyle Standard signs have a 7 year durability Lyle Signs produces signs that exceed industry standards and specifications The temperature range is -40 to 175 degrees F