Yamaha YAS-108 Owner's Manual page 52

2
7 to 9 mm
(1/4" to 3/8")
13 to 15 mm
(1/2" to 5/8")
3
Spacers
457 mm
(18")
4 to 5 mm
(#8 to #10)
20 mm (3/4")
or more
4
52
En
Mounting holes
on the bottom of
the unit
Touch panel