The shadowbox is the first of its kind and was created to offer a UV-protected acrylic solution to 3D framing without the time or cost of a custom product. This shadowbox lid is just that - a lid, so choose your own backing whether it be wood, canvas, or something else entirely! Wexel Art Shadowboxes are made of clear 98% UV Protected acrylic, come in 6 standard sizes, and have a depth of 3".Details:ClearAvailable in assorted sizes5-sided acrylic shadowbox lid only (3/16" thick)Polished edges and pre-drilled holes4 ScrewsHang vertically or horizontallySize Information:6" x 6" = 6.06" x 6.06"12" x 12" = 12.09" x 12.09"16" x 20" = 16.06" x 20.08"20" x20" = 20.08" x 20.08"18" x 24" = 18.03" x 24.06"24" x 36" = 24.06" x 36.06"