We print directly on ¼” acrylic with our flatbed printers and use 2nd surface printing so that your image is displayed under the acrylic. After printing, this is followed by a layer of white ink as well as an additional white backing finishing that protects the image from being scratched from the back. We apply the hanging hardware to the back using a mechanical applicator for perfect placement of the backer, your Acrylic PRO is then cleaned and wrapped for packaging.