A modular display assembly for displaying merchandise includes a pair of opposite side members and a plurality of shelves adjustably mounted to the side members. The present disclosure teaches a solar array circuitry design that can produce more stowed transfer orbit power than the traditional solar array. As a result, the alignment of the thermal heads can be easily and accurately adjusted. Each enclosure wall section includes flange members on opposing side edges. When the protective element is in the first position, the lock is at least substantially contained inside the protective element and, when the protective element is in the second position, at least a portion of the lock is at least partly accessible to touch. The inner wall may include an annular protrusion.