According to the data sheet it's plastic, but it's thin and made of light metal. The lid does not hold well, the ventilation is poor. I don't close the lid because I don't like how hot it gets with the lid closed. The box is cute and I really like that it hides the cables, but it's not worth the price. I accidentally reworked the package and can't get it back, so I'll get it working, but I don't recommend it at all.
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