Kohler K-18829 Guía De Instalación Y Cuidado página 12

Install the Water Supply (cont.)
(102 mm) maximum to allow access to the handle. The water supply
shut-off handle should be no higher than 7/8" (22 mm) from the
center of the water supply.
Install the cleansing seat water supply and a quarter-turn, 1/2"
NPT supply shut-off valve.
1246750-2-C 12 Kohler Co.