HPE Aruba Networking AP-MNT-A (R3J15A) is a mounting bracket kit for campus wireless access points. It is designed to attach a compatible access point to a suspended ceiling rail, providing a practical way to place network equipment overhead.
This Type A bracket is made for a flat 9/16-inch ceiling rail. That rail specification describes the mounting interface, so the kit is suited to installations using this particular ceiling grid style. The HPE listing identifies it as an AP mounting option and shows the kit as a single unit.
The product reference is R3J15A. It is the AP-MNT-A individual bracket kit, distinct from other AP-MNT variants designed for different rail types.