Ubiquiti Airmax AirGrid M2-HP 20dBi Grid Antenna 2.4GHz CPE 24vdc POE, AG-HP-2G20.
Ubiquiti Airmax AirGrid M2 High Power, 2.4GHz 20dBi Antenna, 17x24 - 20dBi, 100+Mbps of real outdoor throughput and up to 30km+ range.