The Ubiquiti Networks airGrid M5 HP 5GHz airMAX 27dBi Grid Antenna Feed is a high-performance directional antenna designed for improving network connectivity in a 5GHz frequency band. With a gain of 5.0 dBi, this antenna from Ubiquiti Networks is specifically tailored for enterprise networking and server applications. Its unopened and brand new status ensures that users can expect top-notch quality and reliability for their networking needs.