The disclosure relates to a door handle for a vehicle door which can be installed as such from the door inner side on a handle recess of the outer skin of the vehicle door, wherein the handle unit has a handle module and an especially elongate handle part which is accommodated by the handle module, wherein the handle module has a mechanism for the motorized adjustment of the handle part, wherein the handle unit can be pre-installed on the door. The door handle unit can have a fastening slide which, with the handle unit pre-installed is connected to the handle module on one side and to the motor vehicle door on the other side, wherein for the final installation of the door handle unit an installation movement can be introduced into the fastening slide by a tool in an installation direction from a narrow side of the vehicle door.