Patent ID: 8511867

Claim:
An apparatus, comprising: a first frame comprising: an inner edge; an outer edge; a base comprising a first surface and a second surface facing an opposite direction than the first surface and parallel to the first surface, the base extending from the inner edge to the outer edge; and a second frame coupled to the first frame, the second frame, comprising: an inner edge; an outer edge; a base extending from the inner edge to the outer edge; and a sidewall extending substantially perpendicularly from the inner edge, the sidewall comprising a lip portion being inserted adjacently through the inner edge of the first frame from the first surface of the first frame and extending beyond the second surface of the first frame, the lip portion being measured along the sidewall from where the second surface of the first frame meets with the sidewall once the first frame is coupled to the second frame to a distal end of the sidewall, wherein the first frame is coupled to the second frame in at least a first orientation and a second orientation, the first frame being planarly rotated into the second orientation from the first orientation, the lip portion having a first length when coupled in the first orientation, the lip portion having a second length when coupled in the second orientation, the first length being smaller than the second length.