National Artcraft's black, solid wood front-mounting frame can be used as a table top trivet or wall display. The opening across the front measures 6-1/8". The tile or mirror rests on a narrow shelf that is 5-13/16" across and is 1/4" below the top surface of the frame. The thickness of the frame is 11/16". It comes with a keyhole opening on the back for easy wall display. The back has four sponge rubber feet to protect your table top if used as a trivet. Add your own turn button or glue your item to hold it in place.