| CPC B60W 40/13 (2013.01) [B60K 1/04 (2013.01)] | 20 Claims |

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1. A structural assembly comprising:
a frame comprising a wall at least partially defining an interior region; and
a plurality of panels disposed at least partially in the interior region and coupled to the frame, the plurality of panels comprising,
a first panel comprising a first side and a second side opposite the first side, a first surface and a second surface opposite the first surface, the first surface and the second surface cooperating to define a first corrugation extending in a first direction between the first side and the second side, and
a second panel coupled to the first panel, the second panel comprising a third surface and a fourth surface opposite the third surface, the third surface defining a plurality of depressions and the fourth surface defining a plurality of protrusions complementary to the plurality of depressions.
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