| 摘要 |
A panel assembly is provided comprising a first face having an outer perimeter and a second face having an outer perimeter, the second face being directly opposite the first face and having a substantially smooth surface, the first and second faces forming a first panel thickness. A plurality of borders surround the perimeters of the first and second faces. At least one support member is attached and arranged perpendicular to the first face, the at least one support member extending parallel to at least one border, the at least one support member and the second face forming a second panel thickness, the second panel thickness is greater than the first panel thickness.
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