METAL SIGN IS SIMILAR IN THICKNESS TO OTHER ROAD SIGNS ; IVE HAD THIS SIGN SINCE THE LATE 70s SO ITS OVER 40 YEARS OLD. THEY WERE USED IN AREAS THAT WERE STILL RURAL BUT GETTING DEVELOPED TO A DEGREE WHERE THESE SIGNS BECAME NECESSARY. IVE ONLY SEEN ONE OTHER AND IT WAS ALL SHOT UP AND RUSTED.17X24 IS THE SIZE . SHIPPING BY UPS GROUND WILL BE FREE.