These are beautiful and classy-looking mirrors.  We are having a house built and bought these for the master bathroom.  I don't know how installation will go, but our builder indicated he does not anticipate any problem.  He made sure that sturdy 2x4's where put in just where the mirrors will be hung.
The only problem we had was trying to remove the heavy cardboard that was deeply stapled to the back of the mirrors where the hooks are located.