the ro box needs to be almost perfect to make this lamp look good, i.e. if the box is slightly out of plumb or offline there is very little built-in adjustment in the installation of the base. the base projection that the light bulb/lenses mount onto will turn which makes leveling the lenses a minor annoyance.  but the biggest complanint is the way the lenses slot and turn into the base projection.  a week after installation i've already lost one of four lenses due to breakage.  one of the tradesmen bumped the fixture and the lense came loose.  i noticed that this particular lenses did not "snap" like two of the four when i was checking the electrician's installation.  i need to order this replacement (as well as another).  also i do not know which light bulb types are recommended for the fixture.