An integral workpiece which has a duct located within a region which extends, for example in an annular manner, and formed about an axis of the workpiece. The workpiece has a form-fitting connection by which, when viewed in a cross section extending through the axis, the duct is closed. The form-fitting connection enables, in comparison with known manufacturing methods, particularly simple manufacturing of the workpiece. In particular, no welding or screwing is required for closing the duct.

A pivot clip includes a substantially planar body defining an outside edge and an inside edge opposite the outside edge, the inside edge partially defining a notch; and a pair of arms extending from the inside edge, the notch formed between the pair of arms, the pair of arms angled relative to the substantially planar body such that the pair of arms are noncoplanar with the substantially planar body.

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.