We used this knob on a closet door.  It was a brand new door with all the cut outs already done.  So it was a breeze putting this new knob on.  Directions were easy to follow.  Pretty much if you can read/follow directions and know how to work a screw driver, you can put this door knob on a door.   Has a nice finish that won't show dirt, and has a nice feel to it.