Passepartout, Photo Frame or Shadow Box. Glue-less, hollow, double-walled tray. Create a photo frame for your photo‘s with a posh, wide and deep frame. Enter the dimension of the “inner space“ (the size of the picture or object to display), together with how thick and wide you‘d like the border of the frame to be. The eventual model will be larger, because of the width of border of the frame. The model can be constructed without using glue, although a bit of glue won‘t hurt.