In certain installations, like those of Steelcase 9000, these covers are only for cosmetic purposes since all panels come complete with trim. Panels come in a variety of shapes, sizes, and colors depending on the specific system. Panels are the first item taken into consideration when planning a systems office, as they determine the space required to fit componentry and overall floor space requirements. Panels are available in numerous sizes, fabrics, paint finishes, wood finishes, glass transparencies etc. They can be manufactured with the ability to plug power into their bases or even at the worksurface height, or with no power capabilities whatsoever.
Acoustical panels are generally tackable as well.
Some have open frames in order to promote interaction between co-workers. There are panels with doors in order to provide additional privacy. The material or part which covers the opening on the top of a panel.