The Shadowbox is the first of its kind and was created to offer an acrylic solution to 3-D framing without the time or cost of a custom product. These Shadowbox lids are just that - lids, so choose your own backing whether it be wood, canvas, or something else entirely! Details:TransparentAvailable in multiple sizes3'' depthAcrylic3-D framing solutionPre-drilledIncludes screws