A frame hanger including a substantially planar fixed section, wherein a portion of the perimeter of the fixed section defines a substantially linear mounting guide edge. A single arm is rotatably mounted to the fixed section between a fully extended state and a fully retracted state. While in the fully retracted state, no portion of the arm extends beyond the mounting guide edge of the substantially planar fixed section. In a fully extended state, a pointed end of the arm extends beyond the mounting guide edge of the planar fixed section. A barrier prohibits rotation of the arm, when in the fully extended state, greater than a predetermined acute angle relative to the mounting guide edge. The arm and fixed section lie either in a common single plane or two planes substantially parallel to one another. Alternatively, the arm is integral with and non-rotatable relative to the fixed section.