The MA-MNT-ANT-2 is an extra-long mounting arm designed for the MA-ANT-3-E and MA-ANT-3-F wide patch and narrow patch antennas. It is 33cm (13 inches) long. There is a separate, standard mounting arm option with the MA-MNT-ANT-1, which is the same product except the mounting arm length is the standard length (22cm or 8.7 inches).
The MA-MNT-ANT-2 is designed with an articulating, extended-length arm that allows for mounting the MA-ANT-3-E and MA-ANT-3-F patch antennas to wall and ceiling surfaces1. The mount comes with 5° mounting marks for precise coverage angles.
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
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