Timing, they say, is everything....on today's visit to the parts house, what do I find but a new Wiremold flyer about their floor boxes.

Of particular interest here is the |Walker Wood Floor Box," which is rectangular, comes in 1, 2, and 3 gang versions, and is all steel.
Oddly enough, this particular box LOOKS a lot like an "old work" or "cut-in" box, with one big difference; they have substantial covers!