Wall-hung models
Several models here mount on an in-wall carrier rather than the floor. That gives a completely clear floor beneath, but the carrier has to be fitted before the wall is closed — it is a build decision, not a retrofit.
Wall-hung models have no floor rough-in. What matters instead is carrier position, stud spacing and finished wall depth.
What integrated means
On a seat-plus-toilet set the two are separate products. On an integrated smart toilet they are one unit, designed together — which allows a tankless profile, a lower silhouette and features that are not possible otherwise.
What you get at this level
EWATER+ mists the bowl and wand with electrolysed water to keep them clean between uses. Auto flush, automatic lid, night light and a self-cleaning wand are standard. NEOREST models add TOTO's most efficient flush systems.