Kohler 4179A-NA Installation Instructions And Home Owner's Manual page 5

7. Fix the nog to the studs.
8. Attach the frame to the nog and also the studs at all 6 fixing hole points.
Use minimum M8 coach/tek screws (not supplied).
3
4
5
1112039-A02-I
1
2
6
Apr 2019
Nog
Nog
Nog
5
Vertical Stud
Pencil
Fixing Hole
Stud
Coach/Tek
Screw M8
(Not Supplied)
Kohler New Zealand