So you think it can't be installed any where else??
This is the direction sheet
http://www.aplussupply.com/lew-floor-boxes/pics/pufp_instruct.PDF
No, I'm trying to find some sort of listing for them.
A typewritten, photocopied-converted-to-pdf file really doesn't give me a warm and fuzzy feeling, though. Anyone with a word processor could have come up with that. If it's the real thing, looks like you need to use rigid conduit.