Patent ID: 8769909

Claim:
A frame comprising: a first frame component comprising: a first exterior surface; a first interior surface; a first lip extending away from the first interior surface in a direction opposite the first exterior surface; a first strut having a first channel defined therein, the first strut extending in a direction opposite the first exterior surface; and a first shaped wall positioned between the first lip and the first strut such that the first interior surface extends from the first lip to the first shaped wall and the first shaped wall extends away from the first interior surface in a direction opposite the first exterior surface; and a second frame component comprising: a second exterior surface; a second interior surface facing the first interior surface and spaced apart from the first interior surface; a second lip extending away from the second interior surface toward the first lip, such that the second lip extends toward, is aligned with and is spaced apart from the first lip; a second shaped wall extending in a direction opposite the second exterior surface; and a second strut positioned between the second shaped wall and the second lip such that the second interior surface extends from the second lip to the second strut, a third interior surface extends between the second strut and the second shaped wall and the second strut extends away from the second interior surface and the third interior surface toward the first interior surface such that an end of the second strut contacts the first interior surface, the second strut having a second channel; wherein the first shaped wall is positioned within the second channel and the second shaped wall is positioned within the first channel and an end of the first strut contacts the third interior surface.