Kohler K-18597 Installation Manual page 6

Install the Brackets (cont.)
Align the outermost edge of each bracket at the side mark and
the top edge of the bracket at the horizontal mark. Mark the lag
bolt holes on the finished wall.
Set the brackets aside.
Drill the marked lag bolt holes.
Attach the brackets to the wall using the 5/16" ID flat washers
and 5/16" x 2-1/2" lag bolts (not provided).
Verify the mounted brackets are precisely level. If the brackets are
not level, loosen the lag bolts, then insert a wood shim between
the bracket and the wall. Retighten the lag bolts.
Repeat this procedure for additional vanities.
1055673-2-B 6 Kohler Co.