One way to save a substantial amount of space and to increase the direct visibility of the products is to install recessed glass showcases within your walls. This works well for retail stores, museums and exhibit areas. This type of recessed wall glass cases are often called wall shadow boxes. They can be made in many width and heights. Their depth will vary on how deep you want to insert or recessed them into your wall. The lighting is installed conventionally in as well as the transformers and switches. When installing them the issue is to leave enough extra open space within the inside of the wall so that there is adequate ventilation. Excessive heat should not be allowed to accumulate. Installers will do a cut off in the existing wall in order to place the recessed glass showcase. Once inserted a differential open gap will be left open. It is usually from a quarter of an inch to an inch and a half. For decorative purposes and in order to mask the gap manufacturers are using some cut to size beveled or molded framing all around the recessed glass showcases. The results are striking and render an effect of unique value to the merchandise displayed.