I agree with Charles and Art.
Most likely just attached to the wall with one or two screws.
If you have a ceramic tile floor the base may have been installed before the
tile. Should not be a problem if the two bases are the same size or the new
one is larger.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.