Kohler K-3588 Installation Manual page 6

Mark the Installation (cont.)
Lay the template on the mounting location, matching the outside
edge with the line on the floor.
If there is a flange and the holes marked on the template overlap
the flange, you will need to either cut or grind (depending on the
flange material) the flange until the holes can be drilled into the
subfloor
Use masking tape to hold the template in place.
Drill two 9/16" holes, 1-1/2" (3.8 cm) deep minimum, at the
locations marked on the template.
1095641-2-B 6 Kohler Co.