Juniper QFX5120 Series Hardware Manual page 70

Leave at least 6 in. (15.2 cm) clearance on the left of the chassis for installing the grounding lug.
Leave at least 24 in. (61 cm) clearance in front of and behind the switch for service personnel to remove
and install hardware components.
Figure 35: QFX5120-48Y Switch - Clearance Requirements for Airflow and Hardware Maintenance
If you're installing a QFX5120-32C Switch, note that the dimensions for the grounding lug are different
(see Figure 36 on page
Grounding wire- 14 AWG
Lug- 4.3 mm Circular Lug
Screw- 8mm screw used for tightening the Lug
73. The dimensions are as follows:
72