ValleyDesignsND 2008 Corvette C6 Coupe Acrylic Lighted Edge Lit LED Sign Awesome 21" Light Up Plaque 67 VVD1 Full Size Made in The USA 13 inch size has a battery compartment, 21 inch size does not. Clear 1/4 inch thick edge lit rigid acrylic. Includes AC adapter. See full description below.