Embodiments include a mounting assembly for securing a supported element to a wall structure having an internal thickness. The mounting assembly comprises an internal assembly configured to engage the internal thickness of the wall structure and comprising a central anchor assembly with an anchor portion and a mating portion annularly arranged about an open end of the anchor portion, the mating portion having a first end fixedly attached to the anchor portion adjacent the open end and a second end for engaging the outer wall panel. The internal assembly further comprises a plurality of elongated anchors attached to the mating portion at an oblique angle relative to a central axis of the anchor portion. The mounting assembly further comprises an external assembly for engaging the outer wall panel and the mating portion of the central anchor assembly; and an elongated fastener for securing the external assembly to the internal assembly.