Supports for plural billboard display modules include one or more structural frames mountable to existing billboard poster panels and other planar structural surfaces; each individual structural frame having a sufficient number of frame cutout areas to minimize frame weight to no greater than fifty pounds for hand lifting and mounting to the poster panels, but not such a sufficient number of frame cutout areas to compromise the structural integrity of the structural frame for resisting wind load forces in excess of 100 pounds per square foot when mounted to the poster panels while supporting the plural billboard display modules; and wherein each structural frame is arranged in an array of structural bay members defined by the cutout areas and visual separation features, the visual separation features facilitating the separating of the array into smaller array configurations, wherein the smallest array is a one bay high by one bay wide configuration.