Palo Alto PA-220 Hardware Reference Manual page 13

Install the PA‐220 Firewall
Install the PA‐220 Firewall in a 19" Equipment Rack (Continued)
Step 8 (Four‐post rack installation only) If you installed the optional four‐post rack kit, complete the installation you
started in Step 6. Slide one back rack‐mount bracket into each of the two previously installed rack‐mount rails
and secure the brackets to the back‐rack posts using the appropriate screws for your rack (#10‐32 x 3/4" or
#12‐24 x 1/2") and torque to 25 in‐lbs. Use cage nuts to secure the screws if the rack has square holes.
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Install the PA‐220 Firewall in a 19" Equipment Rack
PA‐220 Next‐Gen Firewall Hardware Reference • 23