1. A back to back electronic display assembly comprising:a first display assembly positioned back to back with a second display assembly;
an enclosed chamber positioned entirely between the first and second display assemblies, wherein said enclosed chamber is substantially sealed to prevent circulating air located within the enclosed chamber from exiting the enclosed chamber;
a first gap defined between the enclosed chamber and the first display assembly;
a second gap defined between the enclosed chamber and the second display assembly; and
a fan positioned to force external air through the first and second gaps.