Polyboard auto plate inserts are made of economical off-white 24-mil heavy card stock with a plasticized coating for all-weather use. These plates are digitally printed in full color. We can use your artwork, or we can help you with a new design. There will be no art charge for most designs. Please allow a minimum of 10 working days for production after acceptance of artwork by manufacturer. Auto plate inserts measure 6" x 12" and are pre-drilled.