Side track lighting systems have been developed to provide additional lighting in free standing glass tower cases and wall glass display showcases. Both categories are tall by definition and are manufactured standard with only the top lighting. Since tower cases and wall showcases have multiple shelves the objects on the top two glass shelves will block a good portion of the lighting to go all the way down. The lower you look in the display case the darker it gets. In order to correct this problem many users are ordering their showcase with the optional side track lighting. The glass shelves are adjustable, so are the spotlights on the side tracks. They can be moved up and down and set to highlight these lower areas that do not benefit from the top lighting. Another of their function is to highlight any product that you want any customer to particularly see. All and all the side track lighting is very useful while being inexpensive.