The idea of an inexpensive, lightweight,functional system was very important in the design. In 1950, Herman Miller marketed the ESU. Originally flat-packed, and requiring only screwdriver and wrench to put together, the ESU did not sell well, so Herman Miller began making preassembled units. In this approach, dents and scrathes proved to be problematic during distribution. As a result, the applied supports were set flush with the wood shelves. In 1955, Herman Miller stopped production if the ESU due to slow demand. Recently, with the renewed interest in the work of Charles and Ray Eames, Herman Miller has brought the ESU back into production.