A dynamic roof top for a truck body and method of assembly is provided. The dynamic roof top comprises at least one dynamic panel having a plurality of wheels for translating the at least one dynamic panel from an extended or closed position to a retracted or opened position and from the retracted or opened position to the extended or closed position. A static panel is included that allows the at least one dynamic panel to obtain and enveloped condition between the dynamic panel and the static panel. A rail system is also provided to allow the dynamic panel to translate from the extended or closed position to a retracted or opened position and from the retracted or open position to the extended or closed position.