A system and device of sliding panels contained in a frame that allows the panels to be stored in one part of the frame and moved to different parts when in use. Panels slide along horizontally and vertically within the frame so that various alternate placement of panels can close the frame, or create openings of different sizes, shapes and locations within the frame. The panels within this system can be used to enclose a vehicle or structure; to protect the interior of the structure and its occupants from inclement weather; miscellaneous intrusions such as insects, dirt and the like; as well as from firearm, chemical, and biological assault. The panels can be readily changed to accommodate to these needs by substituting a panel made of an appropriate material. If the panel system is used in modular form, even panel walls of buildings can be rapidly constructed. The device also can be used for a multi-panel display device.