As they are suspended off the floor there needs to be a very strong mounting system, to not only carry the weight of the pan but also that of the user.
A metal frame is installed in the wall cavity, and as well as supporting the pan it also houses an inwall concealed cistern.
Wall hung pans have more specialised installation. You must check with your builder/ plumber well in advance if you wish to use this type of system as there are certain components which need to installed into the wall framing.
* Image: Caroma Invisi II Wall Hung Frame and Concealed Cistern
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