Quote Originally Posted by cowanw View Post
A shadow box is a picture frame that has some added depth to the space between the glass and the back. It is often used to accommodate the thickness of three dimensional objects of some size. Cased images like daguerreotypes and tintype/ambrotypes can be protected in such frames.
Thank you. Going only by the word I imagined a frame with some flaps around it protecting the image as much as possible from light.