The InSpire wall panel, a transpired solar collector, is mounted a few inches from the building's outer wall. The precision perforations in the wall panels allow outside air to travel through the face of the panel. Solar heated air at the surface of the panel is drawn through the perforations where it rises between the two walls and enters the building's ventilation system. The InSpire wall panel also helps to cool in the summer by preventing normal solar radiation from striking the building's main wall. Hot air is thermally siphoned up the wall and vented through holes at the top of the system, leaving the main wall cool. By-pass dampers in the summer allow fresh air to be drawn into the building, maintaining indoor air quality. http://www.atas.com/Products/Wall/Solar/InSpireWall/tabid/110/Default.aspx