Depending on who you want to listen to, some say that floor mount toilet partitions are intended for bathrooms with high ceilings to give a spacious look then there are those that say it’s intent if for low restroom ceilings that will not allow the overhead bracing or giving it a cramped look.  What you will get is clean lines and the necessity of a good floor backing to keep partitions stable.  Very closely priced with that of the overhead braced series.