Toto DuoFit WT173M Installation And Owner's Manual page 9

9. Cutting Out the Wall Location
The positions of the holes to drill in the wall vary depending on
WASHLET being installed.
Power plug shape may vary
by country. Please confirm
which Power plug shape you
have for correct installation.
For WASHLET with an attached
outlet plug, proceed to page 9.
For WASHLET with the above
plug attached, proceed to page
10.
9