Echogear EGAV-SSBWM1 Instruction Manual page 10

Test Drill Holes
STEP 2.2 B
1/8 in. (3.2 mm) Bit
Drill test holes using a 1/8 in. (3.2 mm) bit.
If you hit DRYWALL ONLY,
proceed to STEP 2.3
If you hit a WOOD STUD,
10
Skip to STEP 2.5
B
B
STEP 2.3 B
2 in.
(51 mm)
Drill Hole(s)
1 in. (25 mm)
3/8 in.
(10 mm)
Bit