Gosh you must think everyone is indeed dumb and uneducated, Koraks. Nobody knows how to even properly ground equipment? Learning correct wiring is routine by age 16 when you grow up in farm country, especially when your own father had a background supervising giant Federal projects. I ran a rural agricultural electric store largely by myself the summer I was 15. What the heck would I know? - Then, prior to retirement, I was in charge of the distribution of the largest selection of Euro power equipment in the western half of the US, with an adjunct major repair service and giant shop with 6-gauge wiring in it (no, that's not a typo - 6 ga, not 16). I know certain things about the evolution of equipment housings you've probably never heard of.
But you are welcome to bid on my other "lightbulb" when I'm too old to use it, which dwarfs the Durst L184. And no need to worry about a metal housing there - the colorhead housing is machined black phenollc from 1/2 inch thick sheet stock, and you need a block and tackle system to remove it. And yes, even that is totally grounded. Incidentally, my own darkroom complex and house were rewired by our company electrician and his crew - Industrially licensed, not just residentially.
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