Showcase anything from photos and maps to sea shells and baby booties. These adjustable shadow boxes allows you the flexibility to mount items that are flat or that require more depth. You can use them as a shallow shadow box to display a photo with a mat, or add the included inserts to create a shadow box that is up to one inch deep. Details:Black shadow box16" x 20" (40.64cm x 50.8cm)Depth adjustable up to 1" (2.54 cm)8 shadow boxesEach shadow box includes 3 optional insertsGlass is movable between the inserts