American Power Conversion AP7862J - Manual (Page 9)

How to Install the Basic and Metered PDU
Basic and Metered Rack Power Distribution Unit 5
Bracket-mounting
You can order a rack-mount bracket kit from APC ( AR8116BLK) . The
brackets attach to the PDU in either of two directions, shown in the
figures in step 1. Consider the orientation of the PDU in the enclosure
before attaching the brackets. A recessed orientation allows the PDU to
be mounted flush with the enclosure; a raised orientation allows you to
route cables through the channel (see the figures in step 2).
1. Attach two brackets to the rear of the PDU , using two pan-head
screws (provided in the bracket kit) for each bracket.
– Recessed orientation
– Raised orientation
Note
You can mount two PDU s on one side of the enclosure by
using the raised orientation.