SmartSign MUTCD # R6-2R 3M Engineer Grade Reflective Sign, Legend "One Way" with Right Arrow, 18" high x 12" wide, Black on White Legend "ONE WAY" 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