Aha! They must have changed the molds from the Boler/Scamp then. Thank you for correcting that!
And just to explain further what I meant, in case anyone is scratching their head now from what I said earlier:
On the Trillium
, the underside and the bottom half of the top shell are made in ONE piece right in the mold, so it's a "true" bathtub. The Boler is made in three pieces: Top half of shell, bottom half of shell, and floor. Then the floor is fiberglass tabbed to the lower half of the upper shell, essentially making them one piece once the fiberglass cures, but still not being a "true" molded bathtub, since the floor and lower body shell are initially molded separately.
The Scamp has a non-molded floor (i.e. wood but no molded fiberglass part) but is essentially constructed like the Boler (and some Bolers do not have molded floors, from what I read).
That's why the Boler/Scamp have "skirts" at the bottom, and the Trillium
(and Casita, I now learn... my bad!) do not.
All of them (Trillium [1970's are what I know about] and Boler/Scamp have a wood core in the floor though, whether it be fiberglass covered or not (not all trailers, but all of these brands).
Steve, does the Casita have a fiberglass layer tabbed over the wooden floor core?
Thanks again, Steve