Abstract: A muntin bar clip includes a contoured body that is shaped to contact the interior of top, bottom and opposing side walls of the muntin bar, and a head that is rotatably attached to the body. The end of the body to which the head is attached is narrowed, to accommodate the rotation of the head without drawing the body from the muntin bar. The body includes projections that extend upwardly and downwardly, and contact the top and bottom walls of the muntin bar. The head includes an L-shaped end, with an upwardly extending wall and a bottom wall. A downwardly extending extension connects to the bottom wall opposite the upwardly extending wall. The extension, which rotatably connects to the body, is separated from the upwardly extending wall by the width of the bottom wall, which is approximately one-half the width of a spacer. The upwardly extending wall is held between the spacer and a sheet of glass.