A mounting system, comprising an insertion component configured to be partially inserted into but not through a hole in a first panel of a wall assembly with an elongated anchor having a hub and at least one anchor tab. An elastic holding member is configured to connect the insertion component and the anchor and the anchor located on a first side of a first panel is configured to be inserted through the insertion component opening defining the hole in the first panel. The holding member pulls the insertion component and the anchor toward each other when the insertion component and the anchor are located on opposite sides of the first panel and separated by approximately a first panel thickness.