The box doesn't appear to have (glass) fiber reinforcement, so I guess the mold is Al. The article doesn't mentioned the type of plastic being used, either - by the looks of the video PP or ABS?
(: ASA, the better ABS. I guess it's ok for a mounted enclosure. One thing that I consider a test for quality - cheap plastic enclosures/shells (esp. shells for tools). PC/PA6/PA66/PC+ABS/POM(!)/PP+GF/HDPE all good (esp. with fiber reinforcement for PC/PA). I can't recall the last time I have seen ASA, aside quick connect garden fittings.
Out of curiosity: what else have you considered as material?
