Siemens SINAMICS V20 Operating Instructions Manual page 28

Mechanical installation
3.4 Push-through mounting (frame sizes B to E)
Dimensions (mm)
Frame size E
Depth inside the cabinet
1)
28
Drill pattern and cut-out (mm)
Fixings: 4 x M5 screws
Tightening torque: 2.5 Nm ± 10%
Operating Instructions, 11/2016, A5E34559884-006
SINAMICS V20 Inverter