Raised access floors were initially developed in the 1960's for computer rooms and data centres. Main-frame computers, data storage and power equipment were large and heavy, and required constant cooling. Raised access floors provided the perfect solution, in that the machines could be cooled from underneath the raised floor, the extra room created could be used for cables and wires, and the sub-floor would still be easily accessible. The initial growth of the industry was prompted by government agencies, financial institutions, and telecom companies, among others. Raised access floors became a standard product in such applications.