20 x 17.25 300 dpi. This is a unique custom background that comes with 16 individual layers. The layered file structure allows you to change the color and get the most flexibility of any lightning backgrounds we've ever offered. Simply adjust the color to anything you like using color overlay in layer styles and you are all set. You can move the smoke, lightning, or paint layer to any area in your image. We've created them with the most popular school colors in mind, so they are ready to go! The perfect companion to the lightning clipping masks and brushes. Using these three tools you will be able to create memorable images in minutes.