CONVERSION SYSTEMS FOR CUSTOMIZING STANDARD TRAILERS FOR SPECIALIZED USES

A conversion system for modifying internal dimensions of a semitrailer for use in hauling freight, the conversion system comprising a plurality of first bumpers, each of the first bumpers being configured to removably attach to one of first and second opposing sidewalls of the semitrailer, wherein the plurality of first bumpers are configured to reduce an internal usable width of the semitrailer, and wherein the plurality of first bumpers are configured to allow airflow around the freight within the semitrailer.