A finish part including a metal body, a metal engagement arm extending integrally from the body, a detent depending from the arm, the detent being formed from the metal of the arm that is plastically deformed out of a plane of the arm. A method for installing a finish part including aligning the engagement arm of the finish part with an opening in a structure upon which the part is to be installed, and urging the engagement arm and the detent into the opening. A structure including a frame having exposed unfinished surfaces, and the metal finish part disposed upon the unfinished surface and that finishes the unfinished surface.