DanG wrote:
These wall hung units are held in place with cast iron carriers
that are bolted to the floor behind the wall. The costs are
higher for the fixture, the carrier, and the volute piping
involved. These units only come with flush valves to my
knowledge, which will require 1" water lines. You are correct
that they are done for sanitary and custodial purposes. They are
very common in commercial work, public facilities, and schools.

That well describes current COMMERCIAL wall-hungs. However, at least 30
years ago, they also did sell residential wall-hungs that used
conventional plumbing and had their own water tank. All the ones I ever
saw were the low-slung decorator one-piece units. You did need to
reinforce the wall, but I truly don't remember if they had a special
plate, or were just lagged off to a 2x nailer in the wall, like a
wall-mount sink is (or should be). I understand they were more prone to
clogs, due to the tight 90 right at the mounting point, unless you made
a deep wall for them.

I haven't been in a REAL plumbing store in 20 years, nor looked through
the plumbing part of a Sweets catalog in about as long. (Presumably
those are on CD or web site now?)

Google Google Google

Yep, Eljer still has them, but none of the other major brands like A/S
or Kohler appear to, but the choices seem fewer (and the prices are
absurdly high). Guess the fad died down, or people rich enough for
custom bathrooms are getting fatter. (Unless wall was reinforced, there
was flex when a large person sat down. A common callback was people
standing on them to reach something, and levering them loose.)

aem sends...