Ubiquiti Networks PowerBea ac - Manual (Page 8)

6. Attach the horizontal slot of the Support Arm to the Upper
Pole Bracket using a Hex Head Bolt, Lock Washer, and
Flat Washer.
Note: Ensure that the degree settings are the same
on both arms of the Upper Pole Bracket.
Degree markings
facing outward
7. Attach the Brace to the pole brackets using the four Screws.