I spent six years installing them five days a week for Sears.It was our most common install,and they would give me $35.00@ plus 25% of extra pay on what I bid at the customers home for anything needed such as cutting or rebuilding cabinets and running electric,waterlines,shutoffs,etc; Just check that they used both screws in the brackets,that it is centered so the door does not rub against anything.Make sure it has a shutoff under the sink,and check that the drain line has a trap going to above the level of the sink basin bottom.They never made us use aerators if they were not there already. Nothing that complicated.