Creators of yard shows almost always define their space with a perimeter boundary, a fence or hedge filled with symbolic configurations, signs, or paintings. Murray's private space—his interior yard show—was defined by the walls of his house. The asbestos and sheetrock panels thus were supplemental protective walls. The panels contain classic Murray allegories: blue and red in conflict on a ground of yellow, punctuated with black. The asbestos panel has an anatomical look and, like many of Murray's later works, may have been influenced by a physical examination Murray had and his seeing X rays and medical charts.