Yamaha F70AET Rigging Manual page 96

REMOTE CONTROL TYPES AND APPLICATIONS
6X3 CONCEALED REMOTE CONTROL DIMENSIONS
13 (0.51)
54.2
(2.13)
251 (9.88)
60.1
(2.37)
89 (3.5)
123 (4.84)
32.8 (1.29)
60.1 (2.36)
If a panel board thickness is below 20 mm (0.79 in.),
make three 7 mm (9/32 in.) holes and use the supplied
bolts and nuts.
If the board is thicker than 20 mm (0.79 in.), make three
4 mm (5/32 in.) holes and use supplied screws.
Cut out the shaded area.
3-8
mm (in.)